What are the restrictions on the response of the Department of Defense within the US?

The Department of Defense (DoD) has specific restrictions on its response within the U.S. primarily governed by the Posse Comitatus Act, which prohibits the use of federal military personnel to enforce domestic laws unless explicitly authorized by Congress or the Constitution. Additionally, the DoD must coordinate with local and state authorities and follow legal frameworks such as the Stafford Act during disaster response. Its operations are also subject to oversight and must respect civil liberties and rights.