Senior Airman Cody Chappell, 90th Civil Engineer Squadron, drives a stake into the ground that holds down a piece of the frame for an Alaskan Small Shelter System while others wait for their turn at the hammer near Bldg 1331 Feb. 21. Junior members of the 90th CES set the tent up as part of a training exercise to gain familiarity with constructing the ASSS, which is a type of tent that can be outfitted with numerous environmental controls. (U.S. Air Force photo by Airman 1st Class Jason Wiese)