A U.S. Air Force unmanned aerial vehicle "Predator" responds to a strike at Balad Air Base using a Hellfire missile. The missile firing targeted terrorists responsible for firing a 60mm mortar at the base. The footage is from one of two strikes which took place the morning of Sept. 5. The 42nd Infantry Division requested the support of the Joint Tactical Air Controller and directed the Predator to the mortar attacks point of origin.

The Predator then followed a terrorist from the mortars point of origin as he ran toward a house. Four other suspected terrorists are also visible in the video. The video from the Predator and the following timeline outline these specific events:
5 Sept 0458 60mm mortar fired at Balad Airbase
5 Sept 0459 Point of origin from mortar attack is determined
5 Sept 0500 Joint Tactical Air Controller contacted for UAV support
5 Sept 0502 Runner joins four others near to house, hot mortar tube visible
5 Sept 0508 Hellfire missile fired.

Sorry some info blacked out, but it is what it is ;)