Research in Motion (RIM) suffered another high-profile defection today as the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATFE) announced that it would "delete the Blackberry from the mix" of devices agents use in favor of Apple's iPhone in a cost-savings move. The transition -- which will replace both 3,800 Blackberry devices as well as dedicated RIM servers -- should be complete in a year, Politico reports.