A lightweight, compact lighting device, which may be detachably, rotatably attached to an earpiece of a pilot's earphone headset or to a military pilot's helmet, is primarily designed for use by pilots in the event of a blackout in the cockpit of an aircraft. The search and survival light is convenient...http://www.google.ca/patents/US5353205?utm_source=gb-gplus-sharePatent US5353205 - Cockpit blackout search & survival light
