gun and his hands slipped and pulled the trigger. three arrests, possible mental health issues, and a less than exemplary military record. what happened? we asked rear admiral john kirby. >> 2007 he didn't have nearly the paperwork problems we have now. so he passes a security clearance. but while he's in the navy this guy has a bunch of problems and yet the navy allows him to essentially leave the service with his clearance intact. >> that's right. >> making him gold to these contractors who are scrambling to get workers. >> the administrative offenses he was guilty of in the navy, dereliction of duty, absent without leave, habitually late for work, don't rise to the level that would instantly call for a revocation of a security clearance. >> do you know if the navy had access to his criminal arrest