PHYSICAL FITNESS — U.S. Navy sailors aboard the guided missile destroyer USS O'Kane participate in "STO BO" at sunset while underway off the Horn of Africa, April 24, 2005. Started by Lt. Shannon McMillan, "STO-BO" has become a fun way of getting involved with a fitness regimen. The O'Kane is currently conducting Maritime Security Operations off the Horn of Africa. U.S. Navy photo by Petty Officer 1st Class Aaron Ansarov