The United States had an unmanned Predator drone over its consulate in Benghazi during the attack that slaughtered four Americans — which should have led to a quicker military response, it was revealed yesterday.

“They stood, and they watched, and our people died,” former CIA commander Gary Berntsen told CBS News.

The network reported that the drone and other reconnaissance aircraft observed the final hours of the hours-long siege on Sept. 11 — obtaining information that should have spurred swift action.

But as Ambassador Christopher Stevens and three colleagues were killed by terrorists armed with AK-47s and rocket-propelled grenade launchers, Defense Department officials were too slow to send in the troops, Berntsen said.

“They made zero adjustments in this. You find a way to make this happen,” he fumed.

“There isn’t a plan for every single engagement. Sometimes you have to be able to make adjustments.”

The Pentagon said it moved a team of special operators from Central Europe to Sigonella, Italy — about an hour flight from Libya — but gave no other details.

Fighter jets and Specter AC-130 gunships — which could have been used to help disperse the bloodthirsty mob — were also stationed at three nearby bases, sources told the network.

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