This September 2011 file photo provided by Vanguard Defense Industries, shows a ShadowHawk drone with Montgomery County, Texas SWAT team members. The prospect that thousands of drones could be patrolling U.S. skies by the end of this decade is raising the specter of a Big Brother government that peers into backyards and bedrooms. The worries began mostly on the political margins, but there are signs that ordinary people are starting to fret that unmanned aircraft could soon be circling overhead. (AP Photo/Lance Bertolino, Vanguard Defense Industries)

Associated Press
This September 2011 file photo provided by Vanguard Defense Industries, shows a ShadowHawk drone with Montgomery County, Texas SWAT team members. The prospect that thousands of drones could be patrolling U.S. skies by the end of this decade is raising the specter of a Big Brother government that peers into backyards and bedrooms. The worries began mostly on the political margins, but there are signs that ordinary people are starting to fret that unmanned aircraft could soon be circling overhead.  (AP Photo/Lance Bertolino, Vanguard Defense Industries)
This September 2011 file photo provided by Vanguard Defense Industries, shows a ShadowHawk drone with Montgomery County, Texas SWAT team members. The prospect that thousands of drones could be patrolling U.S. skies by the end of this decade is raising the specter of a Big Brother government that peers into backyards and bedrooms. The worries began mostly on the political margins, but there are signs that ordinary people are starting to fret that unmanned aircraft could soon be circling overhead. (AP Photo/Lance Bertolino, Vanguard Defense Industries)
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