The NASCAR pace car is driving by the Chairman of the Joint Chiefs of Staff, U.S. Marine Gen. Peter Pace, at the beginning of the Coca Cola 600 race in Charlotte, NC, May 27, 2007. NASCAR invited Gen. Pace to drive the official pace car to pay tribute to the troops. Defense Dept. photo by U.S. Air Force Staff Sgt. D. Myles Cullen (released)