Paul Sinton has been named managing director for European Space Propulsion, Belfast, Northern Ireland, a subsidiary of Aerojet Rocketdyne.
Thinklogical LLC, Milford, Connecticut, has appointed Adm. James Stavridis, USN (Ret.), to its Defense and Intelligence Advisory Board.
Brig. Gen. Allan W. Elliott, USAR, has been assigned as the chief, CJ-4, International Security Assistance Force, Afghanistan.
Paul M. Lewis has been appointed as special envoy for Guantanamo closure.
NetNumber, Lowell, Massachusetts, has appointed Brad Boston as president and chief executive officer.
Capt. Dave Grundies, USN (Ret.), has been named president and chief executive officer of GET Engineering, El Cajon, California.
Rear Adm. Michael S. White, USN, will be assigned as commander, Naval Education and Training Command, Pensacola, Florida.
Brig. Gen. David B. Haight, USA, has been assigned as deputy commander, Regional Command-East, International Security Assistance Force Joint Command, Operation Enduring Freedom, Afghanistan.
Iris Technology Corporation, Herndon, Virginia, has appointed Michael J. Barthlow as executive vice president and chief strategy officer.
Artel LLC, Reston, Virginia, has appointed Nora Taylor as director of contracts.