"happened because of the lack of uniform"
Following interviews of the man's employer, and the official word from the DoD "we tracked the vehicle from a known ISIS safehouse."
The vehicle was a Toyota Corolla whose driver took his coworkers home, and one coworker's home was "a known ISIS safehouse" even though he had long been working for the U.S. effort, in full support of the U.S. effort.
Let alone, ISIS isn't quite a government entity, but rather a terrorist group so not explicitly going to follow international treaties. Their premise is to blend in - the U.S. shouldn't be allowing the collateral damage to happen on our watch, rather do it's best to stop damaging and hurting civilians.
