Flight Surgeon: [regarding the earliest possible time for rescue] You know of course that by 22:31:06, the crew will be dead. There's not enough oxygen left for three men to live that long.
Charles Keith: Well what about... two men?
Flight Surgeon: We don't figure that way, we plot total pressure against total use.
Charles Keith: Is there sufficient oxygen for two men? For one?
Flight Surgeon: [long pause] Two might just make it.


--John Carter (as ) in Marooned