A Coast Guard Air Station Kodiak aviator holds his breath as two rescue swimmers flip a shallow water egress training chair upside down at Base Kodiak’s pool in Kodiak, Alaska, Sept. 26, 2018. The SWET chair is part of annual aviation water survival drills in which Coast Guard aviators must complete certain survival training skills and demonstrate simulated emergency egress capabilities. U.S. Coast Guard photo by Petty Officer 1st Class Charly Hengen.