The military and the CIA currently work side by side in Yemen, with the CIA flying its drones over the northern region out of a covert base in Saudi Arabia and the military flying its unmanned aerial vehicles from Djibouti.

NPR: Obama Sees Narrower Terror Threat, Defends Drones

Drones "are under consideration, " the defense officials said, though the military's stash of unmanned aerial vehicles is in heavy demand.

CNN: January 16, 2013 -- Updated 1835 GMT (0235 HKT)

Drones "are under consideration, " according to defense officials, though the military's stash of unmanned aerial vehicles are in heavy demand.

CNN: STORY HIGHLIGHTS

In 2001, the military had just a few Unmanned Aerial Vehicles (U.A.V.s).

NEWYORKER: Here��s Looking at You

Its pilot line in California will supply solar cells for unmanned aerial vehicles (UAVs) used by the military.

FORBES: Strategic Investor To Green Tech Startups: Get A Grip