art you are off the mark
but your personal disbelief isn't important.

Blackwater agents deliberatly kill civilians for target practice and night training exercises and sometimes get charged with murder when they do it in broad daylight in busy Baghdad traffic circles. The line between Blackwater and the CIA is only a light blur. 2 Blackwater agents also died in the suicide bombing by the triple agent. The others were CIA and one Jordanian agent.

Killing civilians is approved by collateral damage proclamations.
Over a quarter million civilians were killed directly by US military strikes and small weapons. Its not that much if you think about it. But we don't want to think about it really. We would rather be amazed if such a thing could happen. Then doubt it again unless names are given.

The CIA sometimes pays 1000 bucks to Afghan famlies who lost kids or moms or husbands in air strikes. The most they ever got was 20,000 bucks for a dead bride and groom.

However you might try to imagine a code of honor for our mercenaries and troops, it is so different that I do not blame people for not wanting to believe it. It is slaughter or be slaughtered so slaughter the best and as fast as you can. Civilians? just a bump in the road.