All language subtitles for Buried Secrets of WWII Series 1 Part 1 Pearl Harbor 1080p

Narrator: Hawaii, a paradise
for sun seekers and surfers.

But hidden on this
beautiful island there are
scars from a day of infamy,

The attack on pearl harbor.

World war ii was fought
on vast landscapes
across the planet.

Marty (over radio): Where we're
going, we don't need roads.

Narrator: But the evidence of
that war is disappearing fast.

Pete: That is one of
the coolest things I've
ever seen in the water.

That's it...

Peter (over radio):
Congratulations!

Narrator: Now, technology
expert pete kelsey.

Pete: I've gotta scan this...

Narrator: And military
historian marty morgan...

Marty: Oh my god,
look at this view.

Narrator: Are using
21st century technology
to strip away the present

And reveal the buried
secrets of world war ii.

This time: Can a sunken
seaplane reveal the secret

To japanese
success at pearl harbor?

Pete uses the latest
drone technology to
unlock the mysteries...

Of a forgotten airfield.

Marty: Hey! Woah!
Can't believe it!
That's so cool!

Narrator: And one of america's
most iconic battleships,
is explored, scanned,

And revealed, as you've
never seen her before.

(explosion)

(gunfire)

(explosion)

Marty: Few places that you
can look at where history
changed in an instant.

And this is one of them.

Because at 8:06 am on Sunday
December 7th the history of
the united states of america

Changed irrevocably
with the destruction of
the battleship arizona.

Narrator: The surprise
japanese attack on
pearl harbor

Lasted just a few hours and
yet it devastated u.S. Forces.

21 ships of the
u.S. Pacific fleet
were sunk or damaged

And 188 aircraft destroyed.

It was the deadliest
foreign attack on
american soil to that date

And second only to the
terrorist attack of 9/11.

So how did the
japanese achieve such
an overwhelming victory

Against the world's
most powerful nations?

To find the answer, military
historian marty morgan

And scanning expert
pete kelsey have come here,

To the hawaiian
island of oahu,
scene of the attack,

Where they're setting up
base for their investigation.

Marty: Nice, what's in here?

Pete: That's another drone.

Marty: How far
will this one go?

Pete: That thing's amazing.

Narrator: Pete wants
to see how the island
itself shaped the battle.

So he pulls in data from
satellites and aerial lidar

Scans to create
a new 3d map of oahu.

Pete: This is cool.

Narrator: It reveals why
this island became crucial
to the us military...

An extraordinary
natural lagoon protected
by a narrow entrance.

Pearl harbor...

Pete: You can see
that from orbit.

Marty: Yup. The u.S.
Pacific fleet makes its
home here starting in 1940.

This also reminds me
that it's important
to remember it's

Not just the pearl
harbor navy base that's
attacked on December 7th

It's all military
installations across oahu.

So the u.S. Army had
major posts at fort shafter
and schofield barracks.

The army had airfields
at places like hickam
and bellows and wheeler.

So this is an extraordinarily
well defended island and yet
an attack still descends on it.

Pete: The whole
place is one big military
installation, a fortress.

Marty: The reality
was oahu was a very
well defended place.

Narrator: And yet the
japanese not only caused
a huge amount of damage,

They suffered very few
casualties themselves.

The americans lost over 2,000
men, the japanese just 64.

How did they achieve
this astonishing feat?

Pete and marty's
mission, is to find out.

Crucial to the success
of the attack was the
element of surprise.

The huge japanese fleet
had traveled over 3500
miles in complete secrecy,

An astonishing achievement.

But how much of a
surprise was it really?

Did the americans miss
a vital clue that would have
given them a crucial warning?

One man believes they did,
and he claims to have found
the evidence to prove it,

He's submarine
explorer terry kerby.

Marty: This thing is
spectacular terry.

Terry: This is our baby.

Pisces 5 and
her sister pisces 4.

Marty: How deep can they go?

Terry: 2,000 meters,
6,500 feet.

Marty: Is it possible
to go inside?

Terry: Definitely.
Let's check it out.

Marty: Nice, cool.

Narrator: Using his pisces
submarines terry has been
searching the waters around oahu

For the shattered
wreckage of world war ii,

That still lies at
the bottom of the ocean.

Terry: Pisces 5, pisces 4,
go ahead over.

Man (over radio):
Go ahead over.

Ok pisces 5 will be moving
to the south, over and out.

Terry: Roger that. Ok, ok.
Pisces 40 copy over.

Man (over radio): Copy over.

Narrator: And just here,
3 miles outside pearl harbor

He discovered
something extraordinary.

Terry: So on that day I was
in I was in pisces 4 and the
other pilot was in pisces 5

And we had spent a couple
of days doing searching.

Pisces 5. You copy.

Man (over radio):
Yeah, we copy.

Terry: Yeah here we
are coming across it.

Yeah. So that's pisces 5.

Marty: Oh my, it
just comes up at you.

Terry: Yeah. Look at that.

And there it is. That's it.

Man (over radio):
Roger, roger on the stand.

Marty: Can't believe it.

Terry: Moments in history.

So... That was a,
that was a thrilling day
and we were so excited.

I knew that was it!

Narrator: Terry had found
a japanese mini-submarine,

Large enough to carry 2 people
and armed with torpedoes.

But what is it doing here?

To find out marty looks into
the u.S. Military records and
he finds something intriguing.

Early morning on December
7th the warship uss ward
is on routine patrol.

At 6:37 am it spots
something in the water that
looks like a small submarine.

The commander of the ward
realizes it could be hostile

And so they fire at the sub
using their 4 inch guns
and drop depth charges.

Could this be the submarine
that terry kerby has found?

To investigate, pete is
going to create the first
ever 3d scan of the craft.

He is taking high resolution
images captured using
a remote operated vehicle

And he's using a technique
called photogrammetry
to analyze them.

Pete: To start with it looks
at every pixel in every image

And I've got
thousands of them here.

It looks for patterns that
enables it to actually stitch
the photographs together.

You can see how the software
has figured out the position
where each photograph was

Taken and then you just begin
to see a hint of the model
that it's going to create

And then from there,
this is where it gets
really, really cool.

It actually creates
a mesh, or model,

Of this minisub which is just
an amazing piece of history
and a piece of this story.

And of course the value here
to figure out what happened.

You know how did she go down?

I mean look at that.

So terry I can't
think of anyone I'd
rather show this to.

Terry: Wow.
That really is unbelievable.

It's unbelievable that you get
this kind of detail, generate
a 3-d image, from photos.

Pete: Does this do it justice?

Terry: Oh this is amazing.

Narrator: The first question
is whether the minisub
completed its mission.

And here the scan
reveals the answer.

Marty: Look at
those torpedoes.

Terry: Yeah. So these are the
noses of the torpedoes.

Pete: Are they live?

Terry: Well,
they have 780 pounds
of explosive in each one

And nobody really wants to
see how sensitive they might be.

Narrator: So the minisub
never fired its weapons.

The real mystery is why
this minisub is lying on
the bottom of the ocean?

Pete: I am curious about
something I saw when
we were building this.

There is a hole.

Right here on
the conning tower.

Narrator: Could this
hole be the result of
the shot from the ward?

Marty: The weapon that they
fired at the submarine was
a four inch 50 caliber gun.

It fired a 38 pound
projectile traveling about
2,000 feet per second.

And if you look closely at the
ruler you can see that there's
been a little keyholing

So that the hole is a little
bit bigger than four inches
but the size is correct.

Pete: No one could
have survived the
impact of this round.

Narrator: So this is the
japanese minisub spotted
by the ward and fired on,

More than an hour
before the main japanese
attack on pearl harbor.

And pete's scan confirms
that this hole was
the result of that shot,

The first shot
of the pacific war.

Fired not by the japanese,
but by the americans.

Narrator: If the significance
of the encounter with the
minisub had been realized,

The americans would have had
a valuable warning that the
japanese were about to attack.

But instead, on
the mainland, it was a
sleepy Sunday morning.

No alarm was raised,
they had no idea what
was about to hit them.

Marty: Just after
dawn on December 7th
the japanese launched

The first wave
of their attack.

183 aircraft that
approach the island from
the north sweep around to

The leeward coast
of oahu and then begin
attacking their targets.

Narrator: For the next
hour the aircraft attack
hawaii with impunity.

Despite the americans
attempting to fight back,

Just 9 of those 183
planes are shot down.

Astonishingly, the japanese
carrier fleet, around
250 miles north of oahu,

Doesn't take a single hit.

Why do the americans do so
little damage to the enemy?

The answer could lie
with a unique airplane:
The pby catalina.

The catalina is a seaplane
with an exceptional range,

It can fly over 2000 miles.

So it's used as
a reconnaissance aircraft,

Able to search the
seas and find enemy ships.

It was the catalina's job to
locate the attacking fleet but
that fleet was never found.

To find out why marty and pete
have come to the eastern side
of the island, kaneohe bay.

The pby catalina takes
off from the water,

So this sheltered bay
was the perfect home for
3 squadrons of catalinas.

Marine archaeologist
hans van tilburg
has been studying the history

Of this unique airplane.

Hans: This was
a great step forward,

A mono wing seaplane with
an immense range and endurance.

And it just became
a real work horse.

Crew of 9.

It had the capability
to drop bombs,

It could also land
on the ocean and rescue
a lot of downed pilots.

It really became known
for the long range search
and patrol missions.

Marty: I get distracted
sometimes into
admiring the pby because

It's an elegant
and beautiful aircraft.

And it makes me lose track
of the fact that this was

An important
weapon of war as well.

Hans: That's right.

Narrator: So why didn't the
seaplanes moored here take

To the air and track
down the japanese fleet?

Hans has discovered the
sunken remains of a catalina.

Perhaps that can
reveal the answer?

First they need to use sonar
to pinpoint its location.

Ron: So what's the wingspan?

Hans: This things have over
100 feet, a giant parasol wing.

Ron: Oh really? Wow.

Hans: That's why they
stayed aloft and had
a range of 2500 miles.

See that.

Ron: Yeah we got
some hits here.

There it is.
There it is.

Looks like the fuselage.

Pete: That's gonna be a wing.

Ron: That's our spot.
50 feet away.

Ron: 41.
Hans: Stay on target.

Ron: 32.
Hans: Stay on target.

Ron: 24. 21.
We're over it.

Narrator: This bay is known
to have very poor visibility,

Which makes it impossible to
get a good view of the wreck.

So pete and his dive team
are going to use 3d scanning,

To reveal the
catalina as never before,

And hopefully
find out why it's lying
at the bottom of the bay.

Pete: The mission
here is really, as
these cameras suggest,

It's all about photogrammetry.

So we are going to do our
best to basically just orbit,
take pictures as we go.

As many pictures as we
can because we want lots of
overlap between pictures and

Just get as much coverage
as we can with the cameras.

Narrator: Pete is searching
for the wrecked seaplane.

At first he can see nothing.

But finally a structure
appears through the murk.

Hans: This looks
like fuselage moving in.

Torn bits of aluminum.

Marty: That lack of visibility
is really obvious here.

Hans: I think it'll be
hard to patch this together.

Narrator: The silt makes this
is an incredibly challenging
environment for photogrammetry,

Each photo can only
capture a small part
of the huge structure,

Which means they'll need
thousands of pictures.

And every movement they make,
risks disturbing the bottom

Reducing the
visibility even further.

Hans: We won't know if there's
enough to model it until
we try to put it together.

Pete: Good stuff.
That is a cool airplane.

The visibility
is not great.

It might be five
feet maybe a little less.

And you really, really have to
be careful with your movements
because one wrong flick of

Your hand or especially one
of your fins and you're gone

Because the silt
is just everywhere.

So... Challenging
but not impossible.

Narrator: Can pete turn these
murky images into a 3d model

And find out what
happened to the catalina?

Narrator: It takes more
than 8 hours of processing,

To turn the thousands
of photographs

Into the first ever 3d
scan of the catalina wreck.

Pete: Hans look at the mesh.

Hans: Oh nice. This
is amazing to see it like this

And not be hanging upside down
in kaneohe bay is fantastic.

Narrator: The scan
clearly shows one of
the huge catalina wings.

The fuselage, or body,
is tipped on its side.

The other wing and parts of
the tail section are missing.

Pete: With the visibility
and the water being what it is
you can't see the whole thing.

Hans: You cannot.

This is a 3d vision
of the site that is
impossible to have today.

Nobody can see the
aircraft like this, as only
on the bottom of the bay.

Pete: Is that cockpit?

Narrator: Inside the
cockpit pete notices an
astonishing detail...

These are the throttle
levers, one for each engine.

And on the scan you can
clearly see that one of the
throttles is pushed forwards.

Hans: The port throttle
is in the starting
position which suggests

That someone may have been
starting the port engine.

Narrator: And
there's another clue,

The catalina is equipped
with floats, or pontoons,

That stabilize the plane
when it's on the water.

In-flight the floats pivot
and become part of the wing.

So what condition
is this plane in?

Hans: This is the
retractable wing tip pontoon.

Pete: And so these are
in the lowered position.

Hans: Exactly.

Narrator: So the pontoon is
a clue that this plane wasn't
yet in the air even though

At least one of its
engines was running.

Hans: That tells us that this
aircraft was at its mooring.

On the water.
It exploded and sank...

Pete: So somebody,
somebody is trying to
get the thing out of there

Because you're under attack.

Hans: Absolutely.
This was a surprise attack.

Narrator: Pete's scans
reveal that this catalina was
still on the water apparently

Preparing to take off, but
it was struck by the japanese

Before it could get airborne.

And this plane wasn't
the only one damaged.

On land there's evidence
of just how devastating
this attack was.

Today this is marine
corps base hawaii, a highly
restricted military facility.

But pete and marty
have been given special
clearance to look

For traces of December 7th.

Marty: The tarmac here
at kaneohe is still
being used today.

This tarmac was here
in December 1941 except
back then there weren't

Huey helicopters parked here.

There were catalinas,
36 of them in all.

They were tied down some of
them outside of the hangars

On hard stand at
tie downs like that.

Some of them were
inside hangars in fact,
some were in the water.

And these aircraft were
targeted by japanese aircraft.

Japanese came in
strafing them with machine
guns and then dive bombers

And then level bombers
dropping bombs on them.

And at one point one
bomb landed right here.

Narrator: A 3d scan reveals
not just the crater itself.

Now filled in with concrete.

But scars from the
fragments of shrapnel that
splayed out from the impact.

Marty: Yet another
piece of evidence from
the December 7th attack

That is still with us today.

Narrator: Some of
the catalinas were stored
indoors in these hangars.

Pete wants to see if
he can find evidence of
the attack there too.

And in the stairwell at
the back he discovers
something fascinating.

Pete: Oh yeah.
So this is hangar one.

And rumor has it that
there's damage in here
from December 7th 1941.

Interesting angles in here
but really no problem for the
scanner because the laser goes

Out in all directions at about
two million times per second.

The laser scanner
loves interiors.

So we'll get really
rich photo realistic
three dimensional data

Of everything in this space.

So 10 minutes from now we're
going to have some really
amazing three dimensional data.

Narrator: The 3d scan reveals
that the metal staircase still
has bullet holes from 1941.

These must have come from
japanese aircraft firing
machine guns at the hangars.

Pete: Look at this.
So that's either.

Because the shape's little
odd it's either a round that
struck somewhere else and

Tumbled into it.

Or maybe a bit of shrapnel.

And there's one here.

Looks like that.

And another one right there.

That sort of sends a
chill up your spine right.

Not even indoors are you safe.

So even in this concrete
stairwell, bullets are
flying and you can tell

That this is the entry side.

So the bullets would've been
coming in this direction.

That's just, just amazing.

Narrator: So the japanese
attacked the base
with bombs and bullets.

It was a devastatingly
successful raid.

All 33 of the catalinas on the
ground or in the water were
damaged, many beyond repair.

There was now no
way for the americans to
find the japanese fleet.

But that didn't mean
they couldn't fight back.

The americans had more than
150 fighter aircraft stationed
at airfields around oahu

Ready to protect the island.

But the japanese
were prepared.

At the same time as they
destroyed the catalinas,

They also attacked
these airfields.

The result was devastating.

Narrator: The japanese
plan was to first take out
the island's air defenses,

Even before the more famous
attack on pearl harbor itself.

Today, most of the
visible evidence of
that attack is lost.

But pete and marty are
hoping to find traces in one
hawaii's forgotten airfields,

Southwest of pearl harbor
in a place called ewa.

It's visible on
the lidar scan.

If you strip away the
vegetation you can still make
out what looks like a runway.

Marty: People don't get
to come here, it's a
little bit off limits.

Pete: This obviously
looks like tarmac to me.

I mean runway or a
parking ramp or something.

This is definitely
an airfield. Wow.

Marty: What do you think?

Pete: Well I think it's big.

So this must have been
airplanes everywhere.

Marty: I'd say you've got a
couple of layers of history all
superimposed over one another.

Narrator: This airfield
was home to nearly 50
planes on December 7th,

Including fighters
and bombers.

There don't appear to be any
visible traces of battle but
pete thinks he might be able

To find some using a bit
of airpower of his own.

Marty: Whoa. What all
is in here, pete?

Pete: So, tripods for the
g.P.S., landing pads.

Some pretty important stuff.

Marty: So where do you put the
rockets and the machine guns?

So what benefit does
a drone of this size
and complexity give you

That the smaller drones don't?

Pete: Coverage because
it can transition
from hover to fixed wing

And when it does you
will see it take off.

Narrator: Pete wants to get
a scan of the large concrete
area where aircraft were kept.

Marty: Pete that was so cool.

Narrator: He's hoping that his
21st century tech will detect
long lost scars of battle.

Pete: It should transition.
It is.

Marty: What?!
That was cool.

Narrator: It's equipped
with a multi spectral camera.

That takes images in
five different wavelengths.

Three visible colors and
two infrared bands that
the human eye can't see.

Marty: The coolest pete.

Pete: See it yaw
into the wind.

It is trying so hard to
stay on a straight line.

Narrator: The drone
flies autonomously on
a pre-programmed path.

So that every inch of
the target area is covered.

Pete: Now it's in the lane,
it's going to come this way.

Marty: Oh there it is.
It's just getting it
done, isn't he?

Pete: Yup.
Turn baby, turn.

All right. I'm hitting
return to land.

Marty: Will it put
down on that pad?

Pete: It will.

Marty: Damn it straight
up above it, isn't it?

I can't believe it.

You kidding me?
Pete, that was so cool.

Pete: Okay, you're clear.
Disarmed and just in time.

Narrator: Pete has captured
thousands of images of the
airfield at ewa.

Next he uses image
processing software
to stitch them together

And create one super
high resolution image.

And here in the corner of
the large concrete area.

Something has
caught pete's eye.

Pete: There's a spot
it should be right here.

In the data there's this
like big sort of scar...

Marty: Oh it's
right here, isn't it?
Pete: Right here.

Marty: Yeah. That's
from high heat.

And so otherwise you'd
just walk right over it
and not even notice it.

But this is basically
the footprint
of a burned aircraft.

Pete: So a parked aircraft...

Marty: Here's an
eyelet you see.

There's a tie down so
this was a hard stand.

So you had a marine
airplane that was tied
down right at this spot.

It was struck.

As the fuel inside
the aircraft burned off,

As the airplane
turned into a torch...

And it left this damage
that's still here to this day.

Pete: Right and militarily
neutralizing your opponent's
airpower which was lined up

And exposed right
here makes sense.

Narrator: Every single one
of the 49 aircraft at ewa was
disabled by japanese fighters.

And across the island the
japanese would go on to damage

Or destroy almost 350
of the 390 us aircraft.

The strategy had worked.

Us air defenses had been
devastated, their eyes
and teeth neutralized.

Now the japanese could
turn to their main target...

Pearl harbor.

It's here that the deadliest
event of that day occurs.

Pete's next task will be
to reveal the site of that
most infamous tragedy,

As never before...

Pete: Unbelievable!

Marty: The next step in the
japanese first wave is the
attack on the navy base here

At pearl harbor and it
begins at about 7:55 am,

They had expected
to find aircraft carriers
but they didn't find any.

And so they focused much
of their attack on this, the
eastern side of ford island.

Narrator: The japanese
prime target is now the
7 battleships moored up

In a line called
battleship row.

They attack first
with torpedo bombers,
flying as low as 50 feet.

The battleships oklahoma,
west virginia, and california

Are all hit by these
800 kilogram torpedoes.

Then the high-level
bombers attack,

Dropping armor piercing
shells from around 10,000 feet.

And then, 15 minutes
into the attack,

The japanese score
their most devastating hit,

On the battleship arizona,

Caught on film in this
extraordinary footage.

♪ ♪

The destruction of the
arizona causes the largest
loss of life that day.

1,177 men are killed,

More than died on all the
other ships put together.

Marty: Arizona up until that
moment up until 8:06 am was
this magnificent piece of

National prestige the
pride of the navy literally.

You can still see her.
She's still here.

The buoy there marks
the bow of the ship and
there's another buoy

Back here that marks
the stern 608 feet long.

Beautiful, beautiful ship.

Narrator: Now, this
mighty battleship is
preserved as a memorial,

Under the custody of the
national park service.

And today pete is going to
join park service divers
as they scan the wreck.

Pete: I never get
tired of this ever.

This is one of the
greatest things I get to do.

Just to be here.

But to actually contribute
to some of the actual hard
work and the science is just

Incredibly meaningful
to anyone who is here and
gets to get in the water.

Narrator: Pete is hoping
the data he collects will
show why the arizona suffered

So much more damage
than any other ship.

The first phase of
pete's investigation is
to create a new 3-d model

Of the exposed
upper deck of the ship.

Pete (over radio): We're
here at the uss arizona.

How can you not just be
amazed by a site like this?

These are bowls that
sailors no doubt ate out of.

Beautiful white
hexagonal tiles here in
the area of the galley.

Here we actually might
have what could be a
bomb penetration hole.

The bomb came
through the deck.

You have the skin of the ship.

You can see it
curves as it exploded.

A site like this is a
great place where we can use
photogrammetry to monitor

The change that's
obviously going on here.

So we will swim around
this site with a camera
taking pictures as we go.

You can literally fly.

Here's an open hatch.

I'll have a go at it.

With the right camera you can
get not only beautiful models

But important models,
valuable models.

Oh my gosh.

Looks like a leather
boot of a sailor.

That's just astonishing.

It really puts the
humanity on the arizona.

Everything about this,

Paying the ultimate sacrifice.

Narrator: Will pete's scan
reveal what happened on
that tragic day in 1941?

Narrator: Pete and his team
have taken thousands of images

Of the exposed top
level of the arizona,

Focusing on an area in the
middle of the ship, here.

Next, pete can turn
them into a brand new
3d model which reveals

An extraordinary window
into life on board the ship.

He's going to analyze it
with national park service
historian, and arizona expert,

Daniel martinez.

Daniel: God the
detail is amazing.

You know I've had the
opportunity years ago
to dive on it

And now I'm looking at detail
that I would think would be
unthinkable at the time.

Narrator: These details
reveal exactly which part of
the ship we're looking at.

These are huge ovens, meaning
that this is the galley,

Where food was
prepared for the crew.

You can even see
the kitchen tiles.

It's a reminder that this
was where hundreds of sailors
worked, slept and ate.

Including many who lost
their lives in the attack.

Pete: A great surprise
to me, there were all
these artifacts that

Absolutely put
people on the ship.

There were shoes,
bottles, a cooking pot,

And it's just really personal.

The project pretty much
changed for me in that moment

When you see artifacts that...

Daniel: Are connected
to human beings...

Pete: Right.

Daniel: Well that human
touch just reminds you that
this was a living ship.

It brings it all home,
this great tragedy of the
outbreak of world war ii

For the united
states of america.

We're very fortunate
the arizona is in the
pearl harbor naval base

Because that
ensures its protection.

And so, that there won't
be people that would do
something they shouldn't do,

And remove something
from the ship.

Because everything on
that ship, is a clue
to what happened.

Narrator: But to figure
out what caused so much
damage to the arizona,

Pete is going need more than
just a scan of this one area,

He needs the whole ship,

Which is impossible just
using photogrammetry.

So he's used a
combination of sonar,

Underwater laser scanning
and robotic surface vehicles

To create the highest resolution
scan ever of the uss arizona.

And using augmented
reality the whole of the
mighty arizona can be seen,

For the first time
in more than 75 years.

Pete: Wow!

So this is perhaps the
greatest representation

Of the scan data
we did of the ship.

I can't get over it.

All 600 feet of this ship.

Starting right
here at the prow.

And it goes all
the way up. And out.

And 600 feet that way
about 100 feet wide.

Unbelievable.
I mean look at this.

Oh my gosh.

Narrator: This scan
reveals that the front of
the ship has been blasted

Open by a huge explosion.

Pete: So no doubt when
the explosion happened.

This is such a great
view of how the battleship
armor plate just flowered out

From this massive explosion.

Narrator: This model
shows the damage to the
arizona as never before.

The force required to cause
this much destruction is
greater than any bomb carried

By the japanese aircraft.

But the pattern of damage
shows that the explosion

Occurred in this
area of the ship.

And this is the
location of the magazines,

Where explosives
and armaments were stored.

So a japanese bomb from a
high level bomber must have
penetrated the ship and

Ignited these munitions.

This produced a terrible
explosion, caught
on this remarkable film,

Leading to the rapid sinking
and huge loss of life.

Marty: And now since 1961
this beautiful memorial,

Which was built over
the wreck of the ship,

Has stood here in memory
of the 1,177 men who lost their
lives on it when it exploded.

And the over 900 men
who remain inside this
ship to this very day.

Which is I think why this has
become such a special place.

Because world war ii only
began at the moment that
their lives were lost.

Narrator: Pete and marty
have revealed the secret
scars of that day of infamy,

Still here after more than
three quarters of a century.

These traces have shown
just how brilliantly the
japanese executed their plan.

But america then
responded with a ferocity
and determination that

The japanese didn't expect.

For all its
apparent success, the
attack on pearl harbor

Would turn out
to be a disaster for
the empire of japan.

Captioned by
cotter captioning services.