We get a phone call from Control if we're in station and it is frequently "We have an emergency in Jacketsville, don't know what it is yet" More frequently I have had to start calling control en route to ask what it is we are heading at break neck speed towards. On one occasion the call came back "Patient feeling suicidal, has been violent in the past, police informed" My curt reply was "Well the police need to be on scene before we go anywhere near this, oh and in future you might want to update us on what we're going to.............. tends to help in avoiding us becoming the patient!" Some supervisors in control have even taken to ringing us and questioning why we didn't meet the 8 minute target?!! Crew and patient care have become secondary to these crap government targets.