Ключевые слова: alert, army, beach, blue, clouds, coast, coastguard, coastline, conventional, defend, firetower, force, guard, guarding, gun, help, holiday, horizon, life, military, monitor, monitoring, nobody, ocean, outdoors, protect, radar, safe, safeguard, safety, sand, save, scan, sea, secure, security, sentinel, skies, stairs, sun, sunny, tourism, tower, war, warfare, watch, watchman, watchtower, water, white,