Ключевые слова: 1774, 2017, active, activity, america, american, american football, artificial, athletics, background, black background, blurred motion, closeup, color image, competition, copy space, defocused, field, football, football equipment, football helmet, footballhelmet, game, grass, green, gridiron, helmet, helmets, high angle view, isolated, nobody, object, objects, play, reflection, safe, safety, side, silver, sport, sportive, sports, stadium, top view, traditional, turf, uniform, usa, vertical, view,