A second-gen FSTB (Flight Survival Test Bot) active during the Gemini program and nicknamed "Chuck Yeager in a Can" by the NASA engineers who created him, Alton successfully stress-tested a series of marsupial hearts at supersonic speed. First overhearing the wee robotís sobriquet on the squawk box at Mach 2, the real Chuck Yeager famously and irately declared, "I am un-can-able!" Egos aside, Alton and Chuck flew hundreds of missions together before Alton retired to spend many happy years as a paperweight in the Yeager library, enjoying its hushed, stationary, single-G, room-temperature conditions.