Airmen from the 118th Civil Engineer Squadron, Tennessee Air National Guard, install lightening protection at a pavilion Aug. 10, 2016, at Novo Selo Training Area, Bulgaria. Tennessee National Guard Soldiers and Airmen were on rotations to complete thier portions of projects as part of Operation Resolute Castle 16, an ongoing operation of military construction to build up Eastern European base infrastructure and help strengthen ties between Tennessee's state partnership with Bulgaria. (U.S. Air National Guard photo by Master Sgt. Kendra M. Owenby, 134 ARW Public Affairs)