FILE -- In this June 1, 2017, file photo, the decommissioned USS Independence is towed on her final voyage to the Port of Brownsville near Port Isabel, Texas. The Suquamish Tribe and two environmental groups have sued the U.S. Navy, alleging the Navy cleaned the mothballed 60,000-ton USS Independence aircraft carrier in Puget Sound in violation of federal clean-water laws. The ship was cleaned in waters near Bremerton, Wash., in January and February before it was towed to Brownsville, Texas, earlier this month to be dismantled. The tribe, Washington Environmental Council and Puget Soundkeeper Alliance say the Navy scraped the ship's hull and sent toxic copper-based paint, zinc and other pollutants into the water. (Jason Hoekema/The Brownsville Herald via AP, File)