Alien Blaster in Broken Steel
There is an Alien blaster in a case. During the last part where you destroy the big mobile base, in the middle of the base is a blue shield that has a broken panel. Note: Make sure you have full health because you must run through the shield. In the door there are some weapons. When you get in the door, on the right is a case that has a lock pick requirement of 75 (hard). Below it are some ammunition cases with some alien blaster ammunition.