Ashford needs to read the Posse Comitatus Act:
"...The substantive prohibitions of the Posse Comitatus Act (PCA) were extended to all the services with the enactment of Title 10 USC, Section 375. As required by Title 10 USC, Section 375 the secretary of defense issued Department of Defense Directive 5525.5, which precludes members of the Army, Navy, Air Force, or Marine Corps from direct participation in a search, seizure, arrest, or other similar activity unless participation in such activity by such member is otherwise authorized by law.
The PCA generally prohibits U.S. military personnel from direct participation in law enforcement activities. Some of those law enforcement activities would include interdicting vehicles, vessels, and aircraft; conducting surveillance, searches, pursuit and seizures; or making arrests on behalf of civilian law enforcement authorities. Prohibiting direct military involvement in law enforcement is in keeping with long-standing U.S. law and policy limiting the military’s role in domestic affairs..."
http://www.northcom.mil/About/history_education/posse.html