Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, signs the wall in the recreation room of a remotely piloted aircraft squadron at Creech Air Force Base, Nev., Aug. 12, 2015. Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, signs the wall in the recreation room of a remotely piloted aircraft squadron at Creech Air Force Base, Nev., Aug. 12, 2015. SHARE IMAGE: Download Image: Full Size (23.96554 MB) Tags: Photo Essays Photo By: VIRIN: 240241-O-ECK27-025.jpg Photo Gallery