Perhaps what happens is that people in the Chair Force eventually realize that nobody has any idea if they are killing bad guys.
He was told that they were carrying rifles on their shoulders, but for all he knew, they were shepherd"s staffs. Still, the directive from somewhere above, a mysterious chain of command that led straight to his headset, was clear: confirmed weapons.
... As he watched the men walk, the one who had fallen behind seemed to hear something and broke into a run to catch up with the other two. Then, bright and silent as a camera flash, the screen lit up with white flame.
In one episode that will fuel controversy about allegations of civilian casualties, he described monitoring a drone strike on a mud compound in Afghanistan and seeing the figure of what he was certain was a child just before it was struck by a Hellfire missile.
When he expressed those concerns to an intelligence observer overseeing the operation, the response came back: "Per the review, it's a dog." Bryant replayed the shot repeatedly on tape and said that he was certain it was a child, not a dog.
Note -- it seems PTSD can arise from being a drone pilot, but also note, I have absolutely zero sympathy for the drone pilots. It's an incredibly small bit of karma for the horrific acts they've performed and is the least they deserve, and worse, probably most will never even get that.