Tech. Sgt. Steven Green, 374th Maintenance Squadron aircraft structural maintenance assistant section chief, displays a challenge coin received from Chief Master Sgt. Wendell Snider, U.S. Forces Japan senior enlisted leader, during an immersion tour at Yokota Air Base, Japan, Oct. 5, 2021. An immersion tour gives commanders and senior leaders the opportunity to learn more about the unit's mission. (U.S. Air Force photo by Airman 1st Class Brooklyn Golightly)