Complete the following sentence: On 24 July 1943, days after the end of the Ruhr campaign,
Opération Gomorrah, une attaque sur Hambourg. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk> The "Himmelbett" (canopy bed) system of radar-controlled night fighters slipping into the bomber stream and then using its own radar to pick out and engage individual bombers had gone.<unk> The "Himmelbett" (canopy bed) system of radar-controlled night fighters slipping into the bomber stream and then using its own radar to pick out and engage individual bombers had gone. <unk> <unk> <unk> <unk> <unk> Bomber Command reacted to Wild Boar operations by shortening the time bombers spent over the cities, use of Mandrel and "spoof" or diversion raids. Extended "Window" operations obscured radar and left German single-seat and engine fighters without any guidance for a time.<unk> Extended "Window" operations obscured radar and left German single-seat and engine fighters without any guidance for a time.<unk> Extended "Window" operations obscured radar and left German single-seat and engine fighters without any guidance for a time.<unk> NJG 2 <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> 12 bombardiers were claimed by night fighter pilots; nine by NJG 3 and three by NJG 1.