Petty Officer 3rd Class Christopher Daniel, an aviation maintenance technician at Air Station Sitka, observes an oil sheen surrounding the Western Mariner, an 83-foot inspected tug, in Neva Strait March, 21, 2022.  U.S. Coast Guard photo by Petty Officer 1st Class Brian Wereda. JUNEAU, Alaska — The Coast Guard, Alaska Department of Environmental Conservation, and Western Towboat have established...