U.S. Air Force Chief of Staff Gen. David Allvin speaks with Melanie W. Sisson, Strobe Talbott Center for Security, Strategy, and Technology, Foreign Policy, Brookings, at The Brookings Institution, Washington, D.C., Feb. 28, 2024. Allvin discussed the Air Force’s plans for reoptimization in an era of great power competition. (Courtesy photo/ Ralph Alswang)