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One of several US Navy Northrop Grumman MQ04C Broad Area Maritime Surveillance(BAMS) Unmanned Aircraft Systems(UAS) is seen in a hangar July 31, 2012 at Naval Air Station Patuxent River, Maryland. This is the US Navy's version of the US Air Force's RQ-4B Global Hawk and is a forward deployed, land-based, autonomously operated system that is 47.6 feet (14.5 meters) long, a wingspan of 130.9 feet (39.9 meters) with unrefuled flight times up to 27 hours and 8,200 nautical miles(15,186.4 kilometers) and at altitudes upto 60,000 feet(18,288 meters). AFP Photo/Paul J. Richards (Photo credit should read PAUL J. RICHARDS/AFP/GettyImages)

One of several US Navy Northrop Grumman MQ04C Broad Area Maritime Surveillance(BAMS) Unmanned Aircraft Systems(UAS) is seen in a hangar July 31, 2012 at Naval Air Station Patuxent River, Maryland. This is the US Navy's version of the US Air Force's RQ-4B Global Hawk and is a forward deployed, land-based, autonomously operated system that is 47.6 feet (14.5 meters) long, a wingspan of 130.9 feet (39.9 meters) with unrefuled flight times up to 27 hours and 8,200 nautical miles(15,186.4 kilometers) and at altitudes upto 60,000 feet(18,288 meters).     AFP Photo/Paul J. Richards        (Photo credit should read PAUL J. RICHARDS/AFP/GettyImages)