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U.S. Marine Corps Lance Cpl. Daniel Echevarria, intelligence analyst, 2nd Battalion, 4th Marine Regiment, 1st Marine Division, prepares an RQ-20B Puma drone for launch during Operation Wild Buck (OWB) at Marine Corps Base, Camp Pendleton, Dec. 18, 2018. OWB is a proof of concept exercise designed to demonstrate the potential employment of multiple-integrated unmanned aircraft systems for the purposes of tracking missing or unauthorized personnel, animals and in response during wildfires or disasters. (U.S. Marine Corps photo by Cpl. Emmanuel Necoechea)