General Atomics employees move the MQ-9 Predator B onto the tarmac for maintenance at Fort Huachuca, Arizona in this Decemeber 5, 2006 file photo. U.S. Customs and Border Protection has grounded its ... more 
General Atomics employees move the MQ-9 Predator B onto the tarmac for maintenance at Fort Huachuca, Arizona in this Decemeber 5, 2006 file photo. U.S. Customs and Border Protection has grounded its fleet of drones after a crew was forced to crash the pilotless craft, a maritime variant of the Predator B, off the coast of Southern California because of a mechanical problem, a spokesman said January 28, 2014. REUTERS/Jeff Topping/Files (UNITED STATES - Tags: MILITARY SCIENCE TECHNOLOGY POLITICS TRANSPORT) less 
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Reuters | Photo By JEFF TOPPING / REUTERS
Tue, Jan 28, 2014 2:29 PM EST