The U.S. Navy was set to begin an explosives and sonar training program off the coast of Southern California in 2013. According to estimates, the use of high-frequency underwater sound for testing would deafen more than 15,900 whales and dolphins and kill 1,800 more over the next five years. So MoveOn member Linda Storey started a MoveOn Petition asking the Navy to stop the training program. Linda collected more than 500,000 signatures, and worked with the National Resources Defense Council and others to urge the Navy to end the program. The California Coastal Commission rejected the Navy’s training program, citing the potential harm to endangered blue whales and other sea life.