Chief Master Sgt. Joe Riff (right), 436th Mission Support Group, and Airman 1st Class Benjamin Bisel, 436th Logistics Readiness Squadron, face off at the sumo-wrestling tournament March 16, 2011, at The Landings Club at Dover Air Force Base, Del. The event, sponsored by the Community Activities Center, pitted Airmen from various squadrons against each other in a single-elimination showdown. Master Sgt. Brian Hierl, 436th Force Support Squadron, defeated Chief Riff in the final round to take top prize.