One carries a key that opens a locked door inside the Corvega auto plant. It’s easy to miss, but after you head down to Concord and help out Preston, you’ll be left with a lot of dead Raiders in the streets. Pick Up the Corvega Storage Key and Laser Musket in Concord There, you’ll find a case in the back room (the one with the roaches) prominently set on a stool. To reach it’ you’ll either have to hack the advanced terminal, or head deeper into the basement.
Behind a locked door on the first sublevel is a Mini Nuke.
Head east to USAF Satellite Station Olivia. Take the launcher, but remember it’s not much good without ammo. Perched outside the station is a deactivated robot, and atop a pile of junk behind him sits a Fat Man launcher. It’s due west of the USAF Satellite Station Olivia past the crash site. Just east of Sanctuary is the Robotic Disposal Ground.