The U.S. Navy trains dolphins and sea lions under the U.S. Navy Marine Mammal Program, which is based in San Diego, California. They get some of their dolphins from the Gulf of Mexico. Military dolphins were used by the U.S. Navy during the First and Second Gulf Wars, and their use dates back to the Vietnam War. About 75 dolphins were in the program circa 2007, and around 70 dolphins and 30 sea lions were reported to be in the program in 2019.