رؤية ليلية
Military units on the move are vulnerable to ambush. To avoid the kill zone, a patrol may "fan out" and travel with elements spread out left and right, rather than staying solely on a road or track. Soldiers who take point must keep an eye out for signs of a kill zone, such as disturbed ground, obstacles and restrictive terrain. Night vision and thermal imaging equipment may help to discover hidden weapons, or enemy soldiers under cover.