Answer: "liberate"
Decker says, in reference to George, the man who has left the room(and the Crossbow Project) on moral grounds: "We may have to liberate him." Carnagle immediately asks, "'Liberate'? As in 'liquidate'?" Decker is indeed using the term "liberate" as a euphemism for "kill." (Odd, though, that Carnagle uses ANOTHER euphemism as his point of translation.)