170506-N-KV163-044 LOUISVILLE, Ky. (May 6, 2017) Lt. Cmdr. John Mobius and Lt. Lisa Helman, both assigned to Navy Operational Support Center (NOSC) Louisville, man the rails during the 143rd Kentucky Derby at Churchill Downs. NOSC Louisville has partnered with Churchill Downs offering a military presence at the Kentucky Derby, the longest, continuously running sporting event in United States history. (U.S. Navy photo by Mass Communication Specialist 1st Class John Sorensen/Released)