I was reading a piece on snipers, and you aren't going to believe this, record for the longest kill shot is held by a British sniper, 2.2 miles, it did say that he had a spotter doing the calculations for him. 2.2 miles don't seem possible, which means whatever people around the guy didn't hear the shot until after the guy was laying on the floor. That had to be weird, see a guy hit the floor and then hear the shot.
Over a mile and through a wall is common for sniper teams.
At 2 miles, you'd never guess where the shot came from in many terrains, unless there was professional ballistic analysis
You are doing their biding. Let it go. My Son owns a book called "the snipers bible". I do not read that bible either.