guidance regarding Department activities to protect certain facilities or assets from unmanned aircraft and unmanned aircraft systems Barr, William Pelham creator United States Attorney-General, text dcu 2020 monographic eng 1 online resource (22 pages) "April 13, 2020." GPO Cataloging Record Distribution Program (CRDP). n-us--- Drone aircraft United States Aerial surveillance United States Administrative agencies Security measures United States National security United States J 1.8/2:U 5 J 1.8/2:U 5 https://purl.fdlp.gov/GPO/gpo136711 https://purl.fdlp.gov/GPO/gpo136711 PUCPR 200429 20200518203843.0 on1152522952 eng