The Federal Bureau of Investigation released the following video Wednesday of suspected Navy Yard shooter Aaron Alexis.
The edited video shows Alexis driving through the Navy Yard's main gate. He is driving a rented Toyota Prius.
The video then cuts to Alexis walking in with a large backpack and cuts again to him in a hallway displaying the shotgun. He moves around the building apparently searching for targets.
In the final angle of the video, people can be seen in the distance and Alexis begins to move towards them.
In total, 13 people were killed in the shooting, including Alexis.