Paged by RCMP at 16:32 to assist in locating 2 subjects lost south of the Chehalis fish hatchery in the Chehalis Delta. Command staged at 17:30. First team en route at 18:01. Initial location derived from cell phone 'ping' yielded no results. Updated location was 700M NW of original position. Subjects eventually located at 21:34. RCMP Air 1 assisted with 'Night Sun'. Mission SAR assisted in escorting subjects out. Chilliwack SAR members were held at ICP then released. Subjects checked by BCAS at 22:25 and left en route to home at 20:40. Stood down with ECC at 23:45.