Ключевые слова: air, aircraft, aviation, bristow helicopters limited, britain, british, cliffs, coast, crew, crewman, emergency, exercise, flight, fly, glen, helibus, helicopter, help, hm coastguard, hover, island, llyn, men, mountain, north, ogwen, people, red, rescue, rescuing, rocks, rotor, s92, sea, search, service, sikorsky, snowdonia, training, transport, transportation, uk, united kingdom, valley, wales, water, welsh, winch, winching, winchman,