"Five"
(REQUIRES FULL TEAM) start as normal, racking up points until you open the door and go in the elevator etc, once on the pentagon level everyone take a window to look after, buying ammo for the closest gun near you (Left=PM63, Right=MP5K) when ready buy the barricade down the stairs and go left into the elevator, make sure someone buys the stakeout and watches the back but not too close to it or the elevator will not go down and you will die. Once ready, go down to the labs and turn the power on buying the ak74u whilst there (if you dont know where the power is its the 2nd possible left in a room with a switch on the right proceed left out of that door to find the AK74U) Then sprint back to the elevator, if you cant make it go throught the teleporter in the power room, it will take you to either the speech or war room (1st or 2nd floor). repeat this process when necessary, making sure you get crawlers to activate 4 OF THE DEFCONS NOT ALL make sure that the defcon you don't turn on is the switch closest to the lowest elevator, this way you have a choice to go into the Pack a Punch Room, to find the random box, go into the labs and buy the first door on the left, i have most luck there but i cant guarantee it will be there. happy hunting!