In a secret room in Singapore hangar below control switch you'll find level 5 computer and cooling upgrade. There is an email on a computer named 'Hangar 18,' written by Dave One, which contains sections of the lyrics to the Megadeth song Hanger One. The computer user MSTAINE is a reference to Megadeth member Dave Mustaine. Note: Finding this computer unlocks the "Hangar 18" achievement.
