Original sentence: In October 2007 it was announced that RAF Boscombe Down will become a quick reaction alert airbase from early 2008, offering round-the-clock fighter coverage for the South and South West of UK airspace
Edited sentence: In October 2007 it was announced that RAF Boscombe Down will become a quick reaction alert (QRA) airbase from early 2008, offering round-the-clock fighter coverage for the South and South West of UK airspace