Army Col. Kevin Jacobi, left, the commander of the 11th Armored Cavalry Regiment, escorts Deputy Defense Secretary Bob Work, center, Army Lt. Gen. Pat Donahue, the deputy commanding general of U.S. Army Forces Command, second from right, and Frank Kendall, right, undersecretary of defense for acquisition, technology and logistics, to the Sam Adams club for an exercise briefing at Fort Irwin, Calif., Aug. 5, 2015. Army Col. Kevin Jacobi, left, the commander of the 11th Armored Cavalry Regiment, escorts Deputy Defense Secretary Bob Work, center, Army Lt. Gen. Pat Donahue, the deputy commanding general of U.S. Army Forces Command, second from right, and Frank Kendall, right, undersecretary of defense for acquisition, technology and logistics, to the Sam Adams club for an exercise briefing at Fort Irwin, Calif., Aug. 5, 2015. SHARE: Download: Full Size (2.195478 MB) Tags: Photo Essays Credit: VIRIN: 237797-O-EAT61-146.jpg Photo Gallery