 In the bar scene before Grissoms flight, Deke Slayton (qv) is  underwater swimming with some girls. Gordo says. "Go get em Deke!".  In reality Deke Slayton couldnt swim and never told anyone. When  the astronauts started underwater training at  Scott Carpenter (I) (qv)s suggestion, Deke sank to the bottom and  had to be rescued. He subsequently practiced holding his breath  underwater in his kitchen sink, according to his wife Marge.