Optelian, Marietta, Georgia, has appointed Dennis Isotti vice president of operations.

AMERICAN SYSTEMS, Chantilly, Virginia, has appointed John Manning vice president of the company’s Acquisition and Logistics Strategic Business Area.

Brig. Gen. Mark C. Nowland, USAF, has been assigned director, strategy, policy and plans, J-5, Headquarters U.S. Southern Command, Miami.

Brig. Gen. Steven M. Shepro, USAF, has been assigned commanding general, NATO Air Training Command–Afghanistan, NATO Training Mission–Afghanistan/Combined Security Transition Command–Afghanistan, and commander, 438th Air Expeditionary Wing, Air Combat Command, Kabul, Afghanistan.

Maj. Gen. James W. Hyatt, USAF, has been assigned director, air and space operations, Headquarters U.S. Air Forces in Europe, Ramstein Air Base, Germany.

Maj. Gen. Brett T. Williams, USAF, has been assigned director, operations, J-3, Headquarters U.S. Cyber Command, Fort Meade, Maryland.

William J. Tinston has been assigned program executive officer, Defense Logistics Agency information operations, Defense Logistics Agency, Fort Belvoir, Virginia.

Vikram J. Singh has been assigned  deputy assistant secretary of defense for south and Southeast Asia, Office of the Undersecretary of Defense (Policy), Washington, D.C.

The U.S. Department of Homeland Security has appointed Michael W. Locatis III assistant secretary for Cybersecurity and Communications at the National Protection and Programs Directorate.

Visix Incorporated, Atlanta, has hired Tony Martin as chief operating officer and Lindsay Hahn as customer success manager.