"Notwithstanding any other provision of law, any person convicted of aggravated assault upon a law enforcement officer shall be sentenced to a minimum term of imprisonment of 3 years."
See http://www.flsenate.gov/Statutes/index.cfm?App_mode=Display_Statute&Search_String=& URL=Ch0784/SEC07.HTM&Title=->2007->Ch0784->Section%2007#0784.07
Since this crime isn't among the exceptions, prosecution must be commenced within 3 years after it is committed.

