Confidence/obstacle course and rappel tower at Fort Knox
Sgt. 1st Class Chase Stevens, senior instructor with Company B, 399th Regiment (Cadet Summer Training), left, checks the rappel lines in the caribiner for Staff Sgt. Michael Soto, right, instructor with Co. B, 399th Regt. (CST) June 5 on the CST Rappel Tower on Fort Knox, Ky. Soldiers from 4th Battalion, 399th Regiment, will lead thousands of Reserve Officers' Training Corps cadets from across the country through the confidence/obstacle course and rappel tower at Fort Knox this summer starting in early June. (U.S. Army Reserve photo by Master Sgt. Ryan C. Matson)