Marines with Marine Unmanned Aerial Vehicle Squadron 1 perform function checks for the flight of the RQ-7Bv2 Shadow, an unmanned aerial system, at the Cannon Air Defense Complex in Yuma, Arizona, March 25, 2016. Marine Wing Support Squadron 371 and MWSS-274 supported VMU-1 by building a runway in preparation for the Shadow’s first flight at the site. - Marines with Marine Unmanned Aerial Vehicle Squadron 1 perform function checks for the flight of the RQ-7Bv2 Shadow, an unmanned aerial system, at the Cannon Air Defense Complex in Yuma, Arizona, March 25, 2016. Marine Wing Support Squadron 371 and MWSS-274 supported VMU-1 by building a runway in preparation for the Shadow’s first flight at the site.