Is the US civil defense militia still active?

As of now, the U.S. Civil Defense Militia as an organized entity is largely inactive. The concept of civil defense has evolved, and many of its roles have been absorbed by local, state, and federal emergency management agencies. However, some local or community groups may still operate under similar principles, focusing on disaster preparedness and response. Overall, the formal structure of a national civil defense militia does not exist in the same way it did during the Cold War era.