Defence Ministry refuted reports claiming that a Chinook chopper's model, installed by DRDO during DefExpo 2020 in Lucknow, had gone missing. "Chinook is made by Boeing and DRDO has never installed any helicopter model at Lucknow," the ministry said. A model of Chinook in dilapidated condition was kept at Lucknow's Sector 20 which was removed for helipad's construction, officials said.