The Army Reserve Officer Training Corps Cadet Summer Training kicked off at Fort Knox, Ky. - U.S. on June 3. CST will host nearly 14,000 cadets and active-duty and reserve Soldiers throughout the summer. CST, which will rotate through 10 Cadet Leader Course regiments and nine Cadet Initial Entry Training, is a rigorous, four-week exercise that will see nearly 9,000 cadets through graduation with the final commencement on Aug. 16.