“When you think about maintenance as a whole and the test community as a whole, culturally, the two couldn’t be further apart,” Castleberry said. “That’s for very good reason: Maintenance is in charge of generating airpower that is safe and effective for pilots, and so by virtue of that, they have a lot of rules. They have a lot of guidance and a lot of guidelines to keep the aircraft safe and airworthy. … Whereas the test community, as a whole, is very much on the other side of that spectrum, where they want to be leading it, they want to be to the tip of the spear, and they need to, for the warfighter, to go try risky things and do things that are potentially non-standard to generate the right stuff for the warfighter.