Not only are many enterprise users abandoning their BlackBerrys (RIMM), government workers are increasingly following suit. The NOAA plans to switch from a BlackBerry-only environment to a "platform-agnostic" one, partly due to BlackBerry management costs. Likewise, the ATF is replacing 3,800 BlackBerrys, and the DoD plans to release security guidelines for using iOS (NASDAQ:AAPL) and Android (NASDAQ:GOOG) devices in August. (also)