Air Force Air Combat Command is calling on contractors to protect its airfields in Afghanistan using unmanned aerial surveillance, according to a sources-sought notice posted on the Federal Business Opportunities website this week. Unmanned aerial vehicles are asked to collect up to 600 hours of full-motion video each month using electro-optic, infrared, and midwave infrared imagery sensors in around-the-clock intelligence, reconnaissance and surveillance missions. Although the Nov. 10 performance work statement does not specify a particular aircraft, the UAV must...