"There is almost no oversight of SWAT at the state or local level. Maryland is the exception — in 2009, Maryland enacted a law requiring law enforcement agencies that maintain a SWAT team to report, semi-annually, specific activation and deployment information.77 The law required the Police Training Commission, in consultation with the Governor’s Office of Crime Control and Prevention, to develop a standardized format for each agency to use in reporting data.78 It also provided that if a law enforcement agency failed to comply with the reporting provisions, the fact of noncompliance by that particular agency would be reported to the state legislature.79 Utah enacted a similar bill this year.80
"The Maryland law did not come out of nowhere. The year before, the Prince George’s County Sheriff’s SWAT team had raided the home of Cheye Calvo, the mayor of a small Prince George’s County municipality. The county police department then held Calvo and his family at gunpoint for hours and killed his two dogs, on the basis of a misguided investigation in which Calvo and his wife were wrongly suspected of being involved in a marijuana transaction.81"
"War Comes Home At America’s Expense: The Excessive Militarization of American Policing," American Civil Liberties Union (New York, NY: ACLU, June 2014), p. 28.