Royal Air Force and replacement by the F-35, the RAF Lossiemouth-based 15 (Reserve) Squadron (the Tornado Operational Conversion Unit) was disbanded in March 2017. Lightning: On 23 November 2015 it was announced that a total of 138 F-35Bs will be ordered. 617 (The Dambusters) Squadron officially reformed on 18 April 2018 as an RAF Lightning Squadron. The first four aircraft arrived at RAF Marham on 7 June 2018. The Sentry AEW1, based at RAF Waddington, provides airborne early warning to detect incoming enemy aircraft and to co-ordinate the aerial battlefield. The Sentinel R1 (formally known as ASTOR – Airborne STand-Off Radar) provides a
RAF Digby end of October a Bristol Blenheim fighter and escort Squadron arrived, No. 29 Squadron RAF. With the squadron came the soon-to-be-famous officer Guy Gibson, who would be awarded a Victoria Cross as the commander of the Dambusters. It was Gibson's second tour at Digby as he had learned to fly at the station while attending No. 2 FTS in 1936. Gibson was still based at Digby in 1940 when he was married in Penarth, South Wales; he flew his Blenheim from RAF Wellingore satellite field to RAF Pengam Moors in Cardiff docks for the wedding, returning three days later with