Gary Mayes has joined Sentar Inc., Huntsville, Alabama, as senior director of research and development.
Maj. Gen. Daniel G. Mitchell, USA, has been assigned as commanding general, U.S. Army Sustainment Command, Rock Island, Illinois.
Red Hat Inc., Raleigh, North Carolina, has named Paul Cormier as president and CEO.
Maj. Gen. Patrick J. Donahoe, USA, has been assigned as commanding general, U.S. Army Maneuver Center of Excellence and Fort Benning, Fort Benning, Georgia.
HumanTouch LLC, McLean, Virginia, has appointed Les Buday as director for cybersecurity.
Brig. Gen. Johnny K. Davis, USA, has been assigned as chief of staff, U.S. Army Futures Command, Austin, Texas.
Brig. Gen. Joy L. Curriera, USA, has been assigned as commandant, The Dwight D. Eisenhower School for National Security and Resource Strategy, National Defense University, Washington, D.C.
Blue Ridge, Atlanta, has named Maarten Baltussen general manager of Europe.
Maj. Gen. William K. Gayler, USA, has been assigned as chief of staff, U.S. Africa Command, Germany.
Brig. Gen. Robert M. Collins, USA, has been assigned as program executive officer, Command, Control, and Communications (Tactical), Aberdeen Proving Ground, Maryland.