Sergeant First Class.....looks like he served in a Combat Zone with the 101st Airborne.....with a unit that received both a Presidential Unit Citation and a Meritorious Unit Citation. Didn’t see jump wings....has a Combat Infantrymans Badge (CIB) and an Air Assault badge. I would say he saw action in Viet Nam in the late,late 60’s and early 70’s as the war was wrapping up. That would put him at about 10-14 years service in 1982.....about right for a SFC.
Master jump wings on left pocket