Command Sgt. Maj. Lawrence Wilson, United States Forces - Iraq command sergeant major, examines a sledgehammer present to him to commemorate his visit to Contingency Operating Site Kalsu and troops of the 3rd "Sledgehammer" Advise and Assist Brigade,3rd Infantry Division, Aug. 23. Wilson, who ends a 21 month tour as the senior enlisted Soldier in Iraq on Sept. 1, made an effort to visit each of the three U.S. Divisions inIraq, as well as each of the six Advise and Assist brigades.(U.S. Army Photo by Sgt 1st Class Roger Dey)(released)"