Cadets in Robbie Jackson's Diagnostics class learn how to align shafts.

Cadet Fonzi, wearing a blacked out SCBA mask to simulate smoke, searches the Bowditch classroom for Oscar.

Cadet Pecsok, between the main engines, after checking for leaks on the high pressure fuel lines

A large group of Cadets test out of Celestial.

Toward the back of the upper class mess, a Cadet works through the Celestial exam.