The country’s first official SWAT team started in the late 1960s in Los Angeles. By 1975, there were approximately 500 such units. Today, there are thousands. According to surveys conducted by the criminologist Peter Kraska of Eastern Kentucky University, just 13% of towns between 25,000 and 50,000 people had a SWAT team in 1983. By 2005, the figure was up to 80%.
The number of raids conducted by SWAT-like police units has grown accordingly. In the 1970s, there were just a few hundred a year; by the early 1980s, there were some 3,000 a year. In 2005 (the last year for which Dr. Kraska collected data), there were approximately 50,000 raids.
A number of federal agencies also now have their own SWAT teams, including the Fish & Wildlife Service, NASA, the Consumer Products Safety Commission and the Department of the Interior. In 2011, the Department of Education’s SWAT team bungled a raid on a woman who was initially reported to be under investigation for not paying her student loans, though the agency later said she was suspected of defrauding the federal student loan program.
The details of the case aside, the story generated headlines because of the revelation that the Department of Education had such a unit. None of these federal departments has responded to my requests for information about why they consider such high-powered military-style teams necessary.