WordNet (r) 3.0 (2006):

ATF
    n 1: the law enforcement and tax collection agency of the
         Treasury Department that enforces federal laws concerning
         alcohol and tobacco products and firearms and explosives
         and arson [syn: Bureau of Alcohol Tobacco and Firearms,
         ATF]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ATF
       Automatic Track Finding (DDS)