"An Air Force A-10 Thunderbolt II flew a show of force and expended flares for emphasis over Salerno after enemy forces attacked a coalition forward base. The arrival of the aircraft prompted an immediate retreat by enemy personnel."
Technically you could might be getting stalked by a predator this very moment and you wouldn't know it. They could be on earth!
But yeah, one of the predators do need replaced.
The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.