Ava A. Alexander, a Semper Fit instructor, instructs Sailors with the aquatic survival training center on proper technique during their morning workout at the Fitness Connection, June 29. Semper Fit conducts unit physical training sessions throughout the week at multiple locations on the air station. - Ava A. Alexander, a Semper Fit instructor, instructs Sailors with the aquatic survival training center on proper technique during their morning workout at the Fitness Connection, June 29. Semper Fit conducts unit physical training sessions throughout the week at multiple locations on the air station.