Patrick Grinsven, right, a subcontractor from a German contracting company, uses a roller on a section of artificial turf on Falcon Field at Spangdahlem Air Base, Sept. 1, 2017. Members from the 52nd Force Support Squadron, 52nd Civil Engineer Squadron and 52nd Contracting Squadron worked together with a German contracting company to initiate the renovation that was funded from Spangdahlem's 2016 Commander in Chief's Installation Excellence Award. (U.S. Air Force photo by Senior Airman Preston Cherry)