Col. Scott D. Aiken (right), former commanding officer of II Marine Expeditionary Force Headquarters Group, hands over the organizational battle color to the group’s incoming commanding officer, Col. Michael M. Sweeney during a change of command ceremony aboard Camp Lejeune, N.C., July 1. Aiken, who was in command of II MHG since 2008, will go on to become the II MEF operations officer. - Col. Scott D. Aiken (right), former commanding officer of II Marine Expeditionary Force Headquarters Group, hands over the organizational battle color to the group’s incoming commanding officer, Col. Michael M. Sweeney during a change of command ceremony aboard Camp Lejeune, N.C., July 1. Aiken, who was in command of II MHG since 2008, will go on to become the II MEF operations officer.