Drone Duty Defense Department drone operators and experts test uncrewed aerial systems during Blue UAS Refresh Challenge at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Nov. 4, 2024. The challenge had more than 35 platforms and companies, and an expert team of 40 military drone end-users with participation from each service branch and several major program offices. SHARE: Download: Full Size (1.66 MB) Credit: Devon Bistarkey, Defense Innovation Unit VIRIN: 241104-O-GG979-6184M.JPG Photo Gallery