Airman 1st Class Alejandro Ruiz, 82nd Aerospace Medicine Squadron, assists Al-Jazer Jakaria, Wylie High School Air Force Junior ROTC cadet, into a T-38 seat. Aerospace physiology was one of several stops 81 cadets enjoyed during their tour of Sheppard March 31 and April 1. (U.S. Air Force photo/Mike McKito)