Jake Richmond, fitness director for the 633rd Force Support Squadron, sounds a horn to start the 18th Annual Fort Eustis 10K run and first 5K ruck march challenge at Fort Eustis, Va., March 5, 2016. Approximately 124 runner and 17 ruckers participated in this year’s event. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)

Runners start the 18th Annual Fort Eustis 10K Run at Fort Eustis, Va., March 5, 2016. The run is held annually to promote fitness throughout the Fort Eustis and local communities. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)

Jessica McGaugher participates in a 5K ruck march challenge at Fort Eustis, Va., March 5, 2016. This was the first year Fort Eustis incorporated a ruck march with the run as an effort to introduce different fitness practices to the community. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)

Peninsula Track Club members cheer-on 5K ruck march challenge participants at the finish line at Fort Eustis, Va., March 5, 2016. The track club monitored the finish line and collected the times of each runner. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)

The 18th Annual Fort Eustis 10K Run participants race to place in the event at Fort Eustis, Va., March 5, 2016. Fort Eustis partnered with the Peninsula Track Club to host the community event, which is the grand prix run that kicks off the club’s competitive running season. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)

Medallions line a table during the 18th Annual Fort Eustis 10K Run at Fort Eustis, Va., March 5, 2016. The race led runners along the James River and past the historic Matthew Jones House. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)