Fort Hagen hangar

The Fort Hagen hangar is a sub-location of the Fort Hagen satellite array in the Fallout 4 add-on Automatron.

Layout
The outer array and the hangar is controlled by the Rust Devils. The hangar trapdoor is unlocked by first using a terminal in the upper wooden structures of the outer compound. Note that the terminal only appears after starting the quest Headhunting.

During the quest Headhunting, the player character must fight their way to a robobrain known as Jezebel. When found, Jezebel is just a Robobrain head attached to a computer. Jezebel tells the Sole Survivor she will help with defeating the Mechanist in return for getting her out of the satellite array and finding her a new body.

Weapons

 * Tesla rifle can be looted from Ivey, leader of the Rust Devils.
 * Assaultron blade, salvaged assaultron head, and Mr. Handy buzz blade can be found in a green steamer trunk in the final room after confronting Ivey.
 * Fat Man and two mini nukes behind an expert locked security cage in the final room after confronting Ivey.
 * An additional mini nuke can be found behind an adjacent security gate to the right.

Armor

 * Suit of leveled power armor between two expert locked gates, between the tank room and shelved radioactive barrels. Full set of X-01 at level 28.
 * Tesla armor pieces can be looted from the body of Ivey, including the Tesla T-60 left arm, Tesla T-60 right arm, and Tesla T-60 torso.
 * Hazmat suit tucked in behind the radioactive waste barrels on the lower shelves.

Other

 * Sentry Ahab's helm, a unique sentry bot head mod, can be looted off of Ahab.
 * Fusion core in a room containing several generators though only one is lootable.
 * Nuka Cola Quantum in the generator room next to a terminal.
 * Automatron, a gaming holotape can be found in the terminal of the generator room.
 * An overdue book can be found in a medical room on a bed. First door on the right of the room with the tanks.
 * Vault-Tec lunchbox is hidden in a orange trolley in the corner of the room with radioactive waste barrels on shelves.

Bugs
Inside the main hangar room, as you climb to the top of a staircase leading to a security gate locked by an expert terminal, one can walk off of the edge of the platform and subsequently being able to float around the entire building, as well as being able to walk through walls.