Bomb: Shrapnel is the last training manual, on top of a box truck in the underground tunnel of Bus Depot. It doubles the blast radius of nail bombs.
Catalysis
Catalysis, issue 13 of Savage Starlight, sits at the end of the ventilation ducting that runs along the underground tunnel in Bus Depot.
Family photograph
The Family photograph is an optional artifact in an overgrown camper on the highway at the start of Bus Depot. Before you leave the highway, climb into the camper in the middle of the road and check the dining table on the left.
Natalie Hoo's Firefly Pendant
Natalie Hoo's Firefly pendant lies in a corner behind a city bus on the ramp down to the underground tunnel in Bus Depot. It belonged to Natalie Hoo.
Nicole Hoo's Firefly Pendant
Nicole Hoo's Firefly pendant hangs from a light fixture outside the bus station in the Highway Exit section of Bus Depot. It has to be shot down or hit with a thrown object.