Seaman Ethan Bray, from Coast Guard Sector Columbia River, swims laps as he holds a 10-pound brick out of the water during training at the Astoria Aquatic Center in Astoria, Ore., Sept. 25, 2018.
This training is used to simulate immobilizing much of the upper body, so the swimmer has to use the legs to move through the water as they would need to do during a rescue of a person.
U.S. Coast Guard photo by Petty Officer 1st Class Levi Read.