DARPA Subterranean Virtual Cave Circuit Challenge November 13, 2020/Client: DARPA /by Beth Boyterhttps://uasweekly.com/2020/11/13/darpa-subterranean-virtual-cave-circuit-challenge/ https://spirecomm.com/wp-content/uploads/2018/12/UAS-Magazine-e1544132912546.jpg 45 125 Beth Boyter https://spirecommunications.com/wp-content/uploads/2017/12/SpireLogo-300x138.png Beth Boyter2020-11-13 20:20:362020-11-17 20:21:37DARPA Subterranean Virtual Cave Circuit Challenge