"United States" . . . . . . . . . . . . "Rise of the drones : hearing before the Subcommittee on National Security and Foreign Affairs of the Committee on Oversight and Government Reform, House of Representatives, One Hundred Eleventh Congress, second session"@en . "Rise of the drones hearing before the Subcommittee on National Security and Foreign Affairs of the Committee on Oversight and Government Reform, House of Representatives, One Hundred Eleventh Congress, second session"@en . . . . . .