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Alice -- is tonight for Shepard Smith and the reason he's hit it.
Was not political it was not an off this grudge instead it appears the gunman in the Washington navy yard massacre.
Body was under the control of radio waves.
The bombshell new details coming from the FBI is investigators released chilling video of the gunman.
Who last Monday killed twelve people before police killed him in a shoot out surveillance video caught the shooter walking into the building.
He's in the back noticed the person in front of him holding -- -- courtesy.
Person -- killer.
Next we see the shooter stalking the whole way.
Sawed off shotgun in hand he turns toward an open door -- has -- to target anybody who might be inside.
He doesn't fire keeps on moving.
Next he heads down a stairwell and into another hallway he walks in and head straight to take cover behind a quarter.
Notice how he's crouching down.
Kind of like an animal watching for -- -- And we're gonna play this clip again.
Noticed alcohol way people -- running for cover.
Indicating the Rampage.
Have -- Now I want to watch it with you again.
The weight that they Fed's credit to west without sound it's very powerful watch.
And clearly he would have made some noise.
But we've been advised that there really wasn't much.
Just -- stalking.
Of course the clips from the FBI -- don't show the actual shootings and the final takedown of the gunman but the feds are reviewing key details from their investigation.
Ones which seemed to confirm the troubled navy contractor with a ticking time bomb.
Jennifer Griffin on fox reports -- -- live to pentagon Jennifer.
What is the FBI saying about what this man did and how the Pentagon is reacting.
-- defense officials tell us they are furious the FBI put out this video footage today calling it gratuitous saying it only adds to the pain of the families.
And brought life back to a killer.
In fact the FBI says clues glean from that that it be his laptop and phone now suggest a motive.
And that Alexis believed he was being controlled by extremely low frequency.
Or alpha magnetic -- he suffered from delusions they say for the past three months he carved into this sawed off shotgun.
Three different things he wrote in to the torment.
Not what you all say better off this way and my -- weapon.
At this point I can confirm that there are multiple indicators.
That Alexis how the delusional belief.
That he was being controlled or influenced.
By -- -- low frequency.
Or he Al.
Electro magnetic waves.
ELF waves were used to communicate underwater with nuclear submarines -- -- 2004.
That's when the navy stopped that practice.
The FBI says it is shorthand for government run.
Mind control among conspiracy theorists Harris.
I'll watch that video together Jennifer where he seems to look into an office not seen anyone pull away go to the next one with the actually targeting people he knew.
Well not according to the FBI in fact.
They said today that he had had a routine meeting with his.
With his supervisors on Friday there was nothing unusual in that.
Meeting -- that Friday before the attack he started working at the navy yard on September 9.
Inside the bathroom on the fourth floor of building 197.
The FBI found a USB card reader a -- stick a tough drive USB stick and a rose will external.
Drive as well as a number of CDs and dvds.
There are indicators that -- was prepared to die during the attack.
And that they accepted death as they inevitable consequence of those actions.
There is no indication today.
-- access was targeting specific and then it -- Alexis was killed by law enforcement officials after an hour sources tell fox the video released by the FBI today.
Showed a -- after he had already started his killing spree Harris.
Jennifer Griffin tonight live from Washington thank you.
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