There should always be an attack bird on station with those drones with multiple choices of munitions, such as M20 Rockeyes, 500 lb. smart bombs, even smart bombs made from cement, depending on what the drones find.
That makes perfect sense. The fact is that, unless the explanation really is that we didn't hit them because they were in a cemetary, which I think is insane, I haven't really heard a believable reason from a source I consider authoritative. I am still thoroughly confused.