Which branch of the military is typically involved in maritime security, search and rescue, and environmental protection?

The United States Coast Guard is the branch of the military that focuses on maritime security, search and rescue operations, and environmental protection. This is due to its unique mission set, which includes safeguarding the nation's maritime interests, protecting the marine environment, and performing rescue missions at sea.

The Coast Guard operates under the Department of Homeland Security during peacetime and can be placed under the Department of Defense in times of war or national emergency. Its capabilities enable it to conduct various operations, including law enforcement, navigation safety, and humanitarian missions.

In contrast, the Navy primarily focuses on naval warfare and power projection, while the Marine Corps serves as a rapid-reaction force capable of conducting amphibious operations. The Army, on the other hand, is mainly land-focused, responsible for ground operations and providing land-based military support. Each branch has its distinctive roles, but the Coast Guard’s emphasis on maritime activities makes it the correct choice for this question about maritime security and related operations.