Gerry Griffin Oral History, Part 1, (C-SPAN3, March 12, 1999) At 3m50s - Gerry Griffin (Flight Director, Apollo 13): "I think [Christopher] Kraft was particularly adept at testing people in simulations
and all that sort of thing, and picking out the ones that he thought could cut it and those that he [determined] couldn't... might not. ...
As you know, we didn't have too many washouts in Mission Control."