Question: AB Airlines was originally marketed as Air Belfast where aircraft and crew were based at this airport in Northern Ireland formerly known as what?
Sentence (from "Special Patrol Group (RUC)"): The Special Patrol Groups were formed as mobile support units originally based around police stations in Belfast and with a section ( Orange Section ) in Armagh and it required a minimum length of service and a rigorous interview process before an officer could be accepted into the ranks .
Relevant evidence: No