The coast guard is a maritime security organization responsible for ensuring the safety and security of a nation's waters. They perform various tasks, including search and rescue operations, enforcing maritime laws, and protecting the marine environment. Coast guards often work closely with other agencies to respond to emergencies and prevent illegal activities at sea. In many countries, the coast guard is a branch of the military or a government agency. They use ships, aircraft, and specialized equipment to carry out their missions. The United States Coast Guard is one of the most well-known examples, providing vital services along the country's coastlines and waterways.