Sergeant Maj. Benjamin Pangborn (left) takes over as sergeant major of Wounded Warrior Battalion East in a post and relief ceremony with Sgt. Maj. Joel Collins (front, right) here Jan. 21, 2011. Lt. Col. Nicholas Davis, the battalion commander, presides over the ceremonial handing off of the staff non-commissioned officer sword. Pangborn comes to Wounded Warriors from Okinawa, Japan, where he served as sergeant major of Headquarters and Headquarters Squadron, Marine Corps Air Station Futenma, for nearly three years. Collins will go on to be the battalion sergeant major for 1st Battalion, 2nd Marine Regiment, 2nd Marine Division at Camp Lejeune. - Sergeant Maj. Benjamin Pangborn (left) takes over as sergeant major of Wounded Warrior Battalion East in a post and relief ceremony with Sgt. Maj. Joel Collins (front, right) here Jan. 21, 2011. Lt. Col. Nicholas Davis, the battalion commander, presides over the ceremonial handing off of the staff non-commissioned officer sword. Pangborn comes to Wounded Warriors from Okinawa, Japan, where he served as sergeant major of Headquarters and Headquarters Squadron, Marine Corps Air Station Futenma, for nearly three years. Collins will go on to be the battalion sergeant major for 1st Battalion, 2nd Marine Regiment, 2nd Marine Division at Camp Lejeune.