My understanding is that the Posse Comitatus Act forbids the military from taking over police duties and civilian governments, not assisting the police in carrying out their duties (like during Katrina and the LA Riots). If they’re under the control of the police in this situation, then technically no violation has occured.
The Posse Comitatus Act - Prohibits search, seizure, or arrest powers to US military personnel.
Amended in 1981 under Public Law 97-86 to permit increased Department of Defense support of drug interdiction and other law enforcement activities. (Title 18, "Use of Army and Air Force as Posse Comitatus" - United States Code, Section 1385)
DoD Dictionary of Military Terms, 2006
And WHO was in office in 1981?
Just say "No".