Initially, the G3 would be delivered by a single MS-05 Zaku I which would burst through the side of a colony before firing off one of the missiles from the weapon pictured that contained its deadly payload . One or two of these missiles from a single Zaku appeared to be enough to eliminate the population of an entire colony except for those people protected within a vacuum-sealed space suit, making the weapon highly effective and requiring little manpower to deliver. Ensign Shiro Amada was within a suit and witnessed the horrors the gas caused. Amuro Ray witnessed the lingering aftereffects of the gas later in the war on a devastated colony.