Petty Officer 1st Class Nathan Figula, an aviation maintenance technician from Coast Guard Sector Columbia River, takes a deep breath before being submerged in the water of the pool at the Astoria Aquatic Center in Astoria, Ore. Oct. 1, 2019. The instructors flip Nathan upside down and then monitor him as he practices an emergency egress technique. (U.S. Coast Guard photo by Petty Officer 3rd Class Trevor Lilburn)