Brig. Gen. Ted Harrison, left, passes the guidon and command colors to Brig. Gen. Jeffrey Gabbert as Brig. Gen. Kirk Vollmecke and Command Sgt. Maj. Rodney Rhoades, right, look on during a change of command ceremony Dec. 2 at Joint Base San Antonio-Fort Sam Houston, Texas. Harrison is the Army Contracting Command commanding general and Gabbert is the new commanding general for the Mission and Installation Contracting Command.