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 Bomber Command Memorial year after its unveiling, the memorial was vandalised. The word 'Islam' was spray-painted on the Bomber Command Memorial and also on the Animals in War Memorial nearby. In March 2015, Les Munro, one of the last surviving members of the Dambusters Raid, intended to sell his war medals and flight logbook at auction to raise funds for the upkeep of the RAF Bomber Command Memorial. The auction was pulled after Lord Ashcroft donated £75,000 to the Royal Air Force Benevolent Fund towards the upkeep, with a further NZ$19,500 donated by the Museum of Transport and Technology in Auckland, New Zealand,