Marines with Marine Unmanned Aerial Vehicle Squadron 4 (VMU-4), launch the RQ-21A Blackjack during unmanned air system (UAS) training at Camp Talega, Calif., Apr. 10, 2021. VMU-4 conducts this training in order to enhance aviation mission readiness while refreshing reservists' knowledge on the RQ-21A UAS and emergency procedures. (U.S. Marine video by Lance Cpl. Samwel Tabancay)