What concept? Brits in Arizona or blowing shit up? As stated before a target is engaged with a bomb from a predator it has to meet certain criteria and request of fire from the commander. It has to have two or more sources confirming it's validity and a target package is developed and approved by a JAG team. I'm pretty sure abu Musad al-Zarqawi didn't get permission from JAG before he hacked someones head off.

Predators are safer, cheaper and the pilots get to go home at night. Not that abhorrent to me, I wish I could go home tonight and sleep with my wife. Damn, I should have been a pilot.