Scenes from a nightmare at the Navy Yard

The FBI this afternoon has released a video of Aaron Alexis, the man who staged the massacre at the Washington Navy Yard earlier this month in which 12 people were shot to death.

It also released this timeline:

7:53 a.m. – Alexis’ rental car, a blue Toyota Prius with New York plates, entered Parking Garage #28 at the Washington Navy Yard, located directly across from Building #197.
8:08 a.m. – Alexis exited Parking Garage #28 on foot carrying a backpack. Alexis entered Building #197 and proceeded to the elevator.
8:09 a.m. – Alexis exited the elevator on the fourth floor and entered the men’s bathroom carrying a backpack and a clipboard.
8:15 a.m. – Alexis crossed the hallway into the 4 West area of Building #197 with shotgun, but without the backpack or a clipboard.
8:16 a.m. – Alexis shot the first victim in the 4 West area of Building #197.
8:17 a.m. – First 911 call is received from the fourth floor of Building #197.
8:20 a.m. – Alexis left the fourth floor using the stairs and entered the third floor.
8:28 a.m. – Alexis appeared on the first floor.
8:57 a.m. – Alexis returned to the third floor.
9:25 a.m. – Law enforcement shoot and kill Alexis on the third floor.

And today’s FBI news release also gives some indication of the “why” behind the assault:

There are multiple indicators that Alexis held a delusional belief that he was being controlled or influenced by extremely low frequency (ELF) electromagnetic waves. The etching of “My ELF weapon!” on the left side of the receiver of the Remington 870 shotgun is believed to reference these electromagnetic waves. In addition, a document retrieved from his electronic media stated, “Ultra low frequency attack is what I’ve been subject to for the last 3 months, and to be perfectly honest that is what has driven me to this.”

ELF technology was a legitimate program for naval sub-tonal submarine communications; however, conspiracy theories exist which misinterpret its application as the weaponization of remote neural frequencies for government monitoring and manipulation of unsuspecting citizens.