If people are taking potshots at an Air Force helicopter, why not let the helicopter shoot back? That would decrease the shooter’s enthusiasm a bit.
If people are taking potshots at an Air Force helicopter...
NVA training famous rule of thumb;
Before attempting a shot at a flying aircraft, extend your thumb out like Picasso in line with the target.
If your thumb totally blocks the target, save the ammunition.
If the target extended beyond your thumb, go for it.
At 1,000 AGL this was a lucky shot or some intense preparation.