NEW : Sunday search began at overnight , police say . Ruppert , 29 , went missing Sunday after he jumped out of a helicopter . Searchers used the trajectory of the helicopter and cell phone signals from Ruppert 's phone to narrow down the rescue area . Kurt Ruppert was parachuting over Washington 's the mountains east . He was wearing a special `` wingsuit '' when he made the jump .
NEW : Sunday search began at overnight , police say . Ruppert , 29 , went missing Sunday after he jumped out of a helicopter . Kurt Ruppert was parachuting over Washington 's the mountains east . He was wearing a special `` wingsuit '' when he made the jump .