On the first level, next to the sheild tester, there is some barrels on the table. On the back it describes what rations they contain. On the first it says i think it says peach pudding salty, and on the other, beef stew lumpy gravy.

Also, further on when the aliens attack, when you get your first gun, hit the box with the hat on. You can move it away and leae the hat levitating!