Original sentence: Long-range demonstration flights were made with in-flight refuelling by other Valiant tankers that had been pre-positioned at airfields along the route.The HDU was mounted on bomb-mounting points and could be removed if necessary; this arrangement meant that the bomb bay doors had to be opened in order to transfer fuel to a receiver aircraft.The two squadrons became dedicated tanker squadrons on 1 April 1962.The two tanker squadrons regularly made long range flights
Edited sentence: In 1963 a squadron of Gloster Javelin fighters was refuelled by tankers and flew in stages from the UK to India (Exercise "Shiksha") to support the Indian Air Force in a dispute over their border with China.Long-range demonstration flights were made using Valiant tankers pre-deployed along the route.The HDU was mounted on bomb-mounting points and could be removed if necessary; this arrangement meant that the bomb bay doors had to be opened in order to give fuel to a receiver aircraft.The two squadrons became full-time tanker squadrons on 1 April 1962.The two tanker squadrons regularly practised long range missions, refuelled by other Valiant tankers on the way.With in-flight refuelling probes fitted to Valiants, Vulcans and Victors and Valiant tankers available to give fuel and extend the range of the aircraft being refuelled, the RAF Medium Bomber Force could go beyond "medium range", and the RAF had a long range capability