Asst. Sec. of the Army Katherine Hammack, on the Army’s use of renewable energy to lighten the load soldiers carry, reduce supply line vulnerability, and cut energy spending; Asst. Inspector General Michael Roark, Office of the Inspector General, Department of Defense, on DoD overspending and improper payments for travel; Lt. General David Barno (USA ret.), former Commander of Combined Forces Command-Afghanistan, on the civilian/uniformed communications divide; Hope Seck, reporter, Military.com, on Lockheed Martin’s claim that it can cut the cost of each F-35A by $15M in the next three years; and Richard Aboulafia of the Teal Group, on the possibility of cost reductions on the other F-35 variants, and the Air Force’s decision to hold off on retiring the A-10 program.