Dispatchers routinely call a crew number over the radio and utter two words, “Check up”. The crew knows what is being asked and usually replies with a signal code that indicates they are OK, or they might indicate they could use another crew or two to assist. Some crews even go so far as to tell the dispatcher there is no need for further checks. The most terrifying radio transmission to hear is when a crew yells “99””, or some other signal, alerting everyone the officer is i