>>Leaving before anyone could notice you would be a bit more of a problem.
So you sit. Hope they don't have dogs, wait for dark, then exfiltrate. Hell, there are even ways to counteract dogs.
How many former snipers do you think there are in civilian life? How many smart rednecks who can shoot well enough to hit a rocket-sized target at 300 yards? (hell, I'm in that category...)
Somewhere in the union of those two sets, there may exist somebody with sufficient motivation to pull something like this, and enough spare time to prepare well enough to succeed.
I'm not saying that this is what happened, but I am saying that it's far from impossible.
So you sit. Hope they don't have dogs, wait for dark, then exfiltrate. Hell, there are even ways to counteract dogs.
How many former snipers do you think there are in civilian life? How many smart rednecks who can shoot well enough to hit a rocket-sized target at 300 yards? (hell, I'm in that category...)
Somewhere in the union of those two sets, there may exist somebody with sufficient motivation to pull something like this, and enough spare time to prepare well enough to succeed.
I'm not saying that this is what happened, but I am saying that it's far from impossible.