“We kill people based on metadata” and other metadata things
"Signature strikes" -- the target has a signature (movement, data, use of a satellite phone or specific cellular number, entourage, etc) that matches that of an HVT (high value taget) that is authorized for termination by drone strike.  The CIA has killed lots of the wrong people because "signature strikes" don't require second source intelligence to verify who the target is (eg: is the person using the satellite phone really the HVT or is it a courier or even his kid?).  As an American I'm ashamed that my government has done things like this and I fully support those responsible for these programs to be tried as war criminals.