TY - BOOK ED - United States. TI - Unmanned aircraft systems: emerging uses in a changing national airspace : hearing before the Subcommittee on Aviation of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Fifteenth Congress, first session, November 29, 2017 PY - 2018/// CY - Washington PB - U.S. Government Publishing Office KW - Drone aircraft KW - United States KW - Management KW - Safety measures KW - Technological innovations KW - Economic aspects KW - Government policy KW - fast KW - Legislative hearings KW - lcgft N1 - Shipping list no.: 2018-0158-M; CRDP Program record; Includes bibliographical references; Microfiche; [Washington, D.C.]; U.S. Government Printing Office; [2018]; 2 microfiches : negative ER -