Paratroopers of the Indian Army and some mountaineers will be pressed into service on Wednesday to search for the Pawan Hans chopper and its passengers that went missing in Tirap district of Arunachal Pradesh last week.Changlang Deputy Commissioner Chanchal Yadav said the aerial search operations have located the main portion of the wreckage of the chopper lying in a gorge between two hills but the steep downward climb has made it difficult for the rescue teams to reach the exact spot. “The wreckage has been located between Pongkong and longliang villages in Tirap district. The aerial distance to the location Khonsa is about 12 km. The wreckage is lying in a deep gorge. Once we can reach the wreckage, we would be able to find out about the fate of the three passengers of the chopper,” she said while talking to The Pioneer on Tuesday.