Petty Officer 1st Class Joe Waddell, assigned to Naval Mobile Construction Battalion 7, gives Lt. Col. Ron Ross, Army Medical Corps, a tour of the construction site at Ecole 5, a five-classroom school in Djibouti, June 3. NMCB-7 is operating out of Camp Lemonnier, Djibouti, and is homeported at the Naval Construction Battalion Center, Gulfport, Miss.