Sgt. Maj. Timothy King, Marine Air Control Group 28, leads Corporals Course Class 13-1 in a motivational run Jan. 31. “The best part about this class is these instructors, who are guiding the future of our Marine Corps,” said King. The group’s Corporals Course has been operating for more than a year and conducts one class each quarter. - Sgt. Maj. Timothy King, Marine Air Control Group 28, leads Corporals Course Class 13-1 in a motivational run Jan. 31. “The best part about this class is these instructors, who are guiding the future of our Marine Corps,” said King. The group’s Corporals Course has been operating for more than a year and conducts one class each quarter.