When you get to Roswell have a look around and
the go to the bus stop and then Frank will make
it into a Saber have him equip it and then go to
the right of the screen and then you should end
up at the Air Base front gate. Talk to the
officers and then your characters will decide on
finding a "back way in." Go back to the other
screen and then then go talk to the guy nest to
the gas tanks. Not the person next to the truck.
He will tell you about a truck that goes into the
Air Base. Then go back to where the gaurds are
and there will be the truck! (Yay!! ^_^) Get on
the truck and there you go.
The clue Morrison's brother gives you is "Alien." The three passwords should describe the clue. "Gray" "Little" "Men"