The LEP helmet is an amazing piece of field equipment. It has twin 400-watt lights above the eyes, a live-feed camera, and a loud speakers, for starters. LEP trainees have trouble developing the double focus needed to watch the terrain and their helmet screens. This often results in an action known as filling the vase, which is how LEP officers refer to throwing up in one's helmet, and is very humilitating (not to mention smelly).