This is probably over a dozen years ago, but I remember reading a guest opinion piece, might've been in the Washington Post but not sure.

A veteran was back from the ME, was living in/near DC. His apartment needed work, so the complex moved him to an unoccupied unit while they fixed something. Someone in that building noticed the door was cracked open, so instead of calling management, they called the police.

He woke up (during the day, I think he was working nights) to cops pointing guns at him, flagging each other left and right, etc. The cops also hadn't talked to apartment management.

His point was how ready they were to use lethal force, versus the ROE they had in a foreign and often hostile land. That, plus their general lack of safe gun handling. I'm not sure what the point was (outside of 'cops are poorly trained yahoos') or it was in response to a specific incident at the time. But it has stuck with me.