This September 2011 file photo 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. (ASSOCIATED PRESS / Lance Bertolino, Vanguard Defense Industries)
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