Commonly used mARINE cORPS acronyms

PT - Physical Training

POA - Position of Attention

SMI - Senior Military Instructor

MI - Military Instructor

JROTC - Junior Reserve Officers' Training Corps

EGA - Eagle, Globe and Anchor

CMC - Commandant of the Marine Corps

NCO - Non-commissioned Officer

SNCO - Staff Non-commissioned Officer

CO - Commanding Officer

XO - Executive Officer