An Air Force staff sergeant enjoyed a rare distinction recently as the only airmen in his class to complete the 10-day U.S. Army Air Assault School.Staff Sgt. Ivan Sauer, assigned to the 195th Wing Security Forces, was the only airman to graduate from the course in late May and receive an Air Assault Badge, according to a Wednesday release.“After seeing I was the only Airman, I felt I was shouldering the weight of the whole Air Force and the pre…