. . . incident reports for search warrant executions, especially in drug investigations, often contained no information about why the SWAT team was being sent in, other than to note that the warrant was “high risk,” or else provided otherwise unsubstantiated information such as “suspect is believed to be armed.” In case after case that the ACLU examined, when a SWAT team was deployed to search a person’s home for drugs, officers determined that a person was “likely to be armed” on the basis of suspected but unfounded gang affiliations, past weapons convictions, or some other factor that did not truly indicate a basis for believing that the person in question was likely to be armed at the moment of the SWAT deployment. Of course, a reasonable belief that weapons are present should not by itself justify a SWAT deployment. Given that almost half of American households have guns, use of a SWAT team could almost always be justified if this were the sole factor.