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 .
NEW : Sunday search began at 5 a.m. , police say . Kurt Ruppert , 29 , went missing Thursday after he jumped out of a helicopter . Ruppert was parachuting over Washington 's Cascade Mountains . He was wearing a special `` wingsuit '' when he made the jump .