The term "Coast Guard" can be replaced with synonyms such as Marine Police, Border Patrol, Coastal Security, Coastwatchers, Coastal Defense Force, and Maritime Law Enforcement. All of these phrases refer to agencies that are responsible for patrolling and protecting the coastal waters of a nation. These agencies are tasked with a variety of duties including search and rescue missions, fisheries enforcement, drug interdiction, and preventing illegal immigration. While each country may have their own specific agency with their own unique name, the importance of protecting and securing a nation's coastal borders remains a critical component of national security.