CHICAGO, May 28, 2006 – The top U.S. military officer served as grand marshal of the country's biggest Memorial Day parade here yesterday, reminding some 125,000 spectators of the true cost of freedom. Chairman of the Joint Chiefs of Staff U.S. Marine Gen. Peter Pace acts as grand marshal for the Chicago Memorial Day parade May 27. Photo by Staff Sgt. D. Myles Cullen, USAF (Click photo for screen-resolution image);high-resolution image available. Marine Gen. Peter Pace, chairman of the Joint Chiefs of Staff, thanked families of fallen troops who he said "continue to sacrifice for our country every day." Pace...