Sgt. Maj. John Ploskonka, outgoing sergeant major for 9th Engineer Support Battalion, 3rd Marine Logistics Group, III Marine Expeditionary Force, center, consults with Sgt. Maj. James Calbough, the battalion's incoming sergeant major, right, about movement of troop elements in Camp Hansen's gym during a Jan. 7 indoor practice for their relief and appointment ceremony. Calbough officially took his place as the 9th ESB sergeant major in a ceremony at Camp Hansen's parade deck Jan. 8. - Sgt. Maj. John Ploskonka, outgoing sergeant major for 9th Engineer Support Battalion, 3rd Marine Logistics Group, III Marine Expeditionary Force, center, consults with Sgt. Maj. James Calbough, the battalion's incoming sergeant major, right, about movement of troop elements in Camp Hansen's gym during a Jan. 7 indoor practice for their relief and appointment ceremony. Calbough officially took his place as the 9th ESB sergeant major in a ceremony at Camp Hansen's parade deck Jan. 8.