Rear Adm. Thomas A. Cropper, USN, has been assigned as commander, Strike Force Training Pacific, San Diego.
J. Joseph Tyler has been elected senior vice president and director of corporate initiatives, Versar Incorporated, Springfield, Virginia.
The U.S. Army Product Manager for Joint-Automatic Identification Technology, part of the Program Executive Office, Enterprise Information Systems at Fort Belvoir, Virginia, has selected Jim Alexander as deputy product manager.
Michael J. Stella has been assigned as deputy assistant secretary of defense for Senate affairs, Office of the Assistant Secretary of Defense (Legislative Affairs), Washington, D.C.
Rob Umberger has been named director of software engineering for Raxco Software, Gaithersburg, Maryland.
Brig. Gen. John F. Thompson, USAF, has been named program executive officer, strategic systems, Air Force Nuclear Weapons Center, Air Force Materiel Command, Kirtland Air Force Base, New Mexico.
(ISC)2, Palm Harbor, Florida, has named Marc H. Noble director of government affairs.
Maj. Gen. Daniel B. Allyn, USA, has been assigned as commanding general, 1st Cavalry Division, Fort Hood, Texas.
Brig. Gen. Paul T. Johnson, USAF, has been appointed commander, 451st Air Expeditionary Wing, Air Combat Command, Kandahar Airfield, Afghanistan.