Navy sailors trade in their sea legs for land combat skills so they can survive when

AP Photo/MARY ANN CHASTAINArmy senior drill sergeant Warren Brown, top, helps Navy Petty Officer 2nd Class Jade Permenter, of Columbus, Ohio, during a combat training Wednesday, April 19, 2006, at Fort Jackson Army base in Columbia, S.C. In a major turnabout, the U.S. Army is opening its largest training base to help Navy sailors trade in their sea legs for land combat skills so they can survive when sent to places such as Afghanistan or Iraq.