Sgt. Maj. John Sim
Sgt. Maj. John Sim
Sgt. Maj. John Sim is the operations sergeant major for the Utah Army National Guard’s 97th Aviation Troop Command. In his 23 years of service, he has served in a variety of leadership assignments. He deployed to Afghanistan in support of Operation Enduring Freedom. He holds a doctorate in organizational development from Fielding Graduate University, California.