Ключевые слова: airport, background, barb, barbed, barbwire, barrier, border, boundary, camp, cloud, crime, danger, defense, fence, forbidden, freedom, guard, iron, isolated, jail, metal, military, old, outdoors, prison, prisoner, private, protection, razor, safety, security, sharp, sign, silhouette, sky, steel, sun, sunlight, sunset, wall, war, wire,