Training never stops - A man in a military uniform working on a machine

Airman 1st Class Gabriel Smith, 364th Training Squadron hydraulics apprentice course
student, changes out the booster reservoir on March 15, 2018, at Sheppard Air Force Base, Texas.
The booster reservoir holds hydraulic fluid for the hydraulic systems and is responsible for
providing fluid to three primary flight controls. Smith is on block five of eight and is scheduled to graduate on April 11. (U.S. Air Force photo by Senior Airman Robert L. McIlrath)