** FILE ** In this undated handout file photo provided by the U.S. Air Force, an MQ-9 Reaper, armed with GBU-12 Paveway II laser guided munitions and AGM-114 Hellfire missiles, is piloted by Col. Lex Turner during a combat mission over southern Afghanistan. An instruction on camouflaging cars is one of 22 tips on how to avoid drones, listed on a document left behind by the Islamic extremists as they fled northern Mali from a French military intervention in January. (AP Photo/Lt. Col.. Leslie Pratt, US Air Force, File)
** FILE ** In this undated handout file photo provided by the U.S. Air Force, an MQ-9 Reaper, armed with GBU-12 Paveway II laser guided munitions and AGM-114 Hellfire missiles, is piloted by Col. Lex Turner during a combat mission over southern Afghanistan. An instruction on camouflaging cars is one of 22 tips on how to avoid drones, listed on a document left behind by the Islamic extremists as they fled northern Mali from a French military intervention in January. (AP Photo/Lt. Col.. Leslie Pratt, US Air Force, File)
**FILE** Malian troops and soldiers from other African countries train with U.S. Special Forces in the Sahara Desert near the town of Gao in northeastern Mali in May 2010. (Associated Press)
Militants from the Islamist terrorist group Ansar Dine stand guard during a hostage handover in the desert outside Timbuktu, Mali, in April. (Associated Press)
Children attend a class in a madrassa in Gao, northern Mali, February 18.
Children attend a class in a madrassa in Gao, northern Mali, February 18.
** FILE ** In this undated handout file photo provided by the U.S. Air Force, an MQ-9 Reaper, armed with GBU-12 Paveway II laser guided munitions and AGM-114 Hellfire missiles, is piloted by Col. Lex Turner during a combat mission over southern Afghanistan. An instruction on camouflaging cars is one of 22 tips on how to avoid drones, listed on a document left behind by the Islamic extremists as they fled northern Mali from a French military intervention in January. (AP Photo/Lt. Col.. Leslie Pratt, US Air Force, File)
** FILE ** In this undated handout file photo provided by the U.S. Air Force, an MQ-9 Reaper, armed with GBU-12 Paveway II laser guided munitions and AGM-114 Hellfire missiles, is piloted by Col. Lex Turner during a combat mission over southern Afghanistan. An instruction on camouflaging cars is one of 22 tips on how to avoid drones, listed on a document left behind by the Islamic extremists as they fled northern Mali from a French military intervention in January. (AP Photo/Lt. Col.. Leslie Pratt, US Air Force, File)
In this Wednesday, Feb. 20, 2013, photo, a young vendor waits for clients alongside woven reed mats of the type purchased by fleeing Islamists, apparently to camouflage their vehicles, in Timbuktu, Mali. (AP Photo/Rukmini Callimachi)
