Which two military services have components in the National Guard?

The Army National Guard and the Air National Guard are the two military services that have components in the National Guard. This is significant because both branches operate under dual state and federal authority, which means they serve both state and federal missions.

Army National Guard units focus on training for ground-based operations and can be called upon for a variety of missions, including combat operations, disaster response, and peacekeeping. The Air National Guard, on the other hand, provides aerial support and air defense, responding to similar state and federal needs as the Army National Guard.

This dual capability is vital for national security and local response efforts, showing how both the Army and Air Force contribute to the overall mission of the National Guard. In contrast, the other choices involved services like the Navy, Marine Corps, and Coast Guard, which do not have components that are part of the National Guard system in the same way.