Airman 1st Class Stephen Knotts, 436th Aerial Port Squadron ramp services journeyman, reviews shipping documentation for cargo pallets bound for Tajikistan as part of a security assistance mission at Dover Air Force Base, Delaware, June 22, 2021. Security cooperation between the U.S. and Tajikistan advances shared security interests and supports regional stability in Central Asia. (U.S. Air Force photo by Mauricio Campino)