"We could positively max-out our high score if only we had Turbo-Joystick Controllers!" Flak-Vipers have a passive, infrared targeting and sighting system built into their helmets. This allows them to fire extremely accurate Tail-Biter missiles at G.I. Joe aircraft with absolute impunity. These are dedicated and motivated troopers. To maintain maximum level of effectiveness, Flak-Vipers spend long hours everyday practicing simulated missile engagements using program cartridge that plug into their helmets. It would be like playing a portable video game for 10 hours straight. These guys get a kick out of roaming the battlefield in the Cobra "Parasite" while "picking off" incoming enemy aircraft.