Profile: Metalite Aviation Lighting specializes in the design and manufacture of portable airfield lighting systems. CALKIT LED is a versatile, battery-powered runway lighting system specifically designed for airport or airfield use. It is used in portable primary, supplementary, emergency or obstruction lighting, and is suitable for use with both fixed and rotary wing aircraft. Runway end identifier lights (REILs) consist of two strobe lights located at each side of the runway at the approach end. The main application of a REIL LED system is to identify the runway end or threshold of a visual or instrument non-precision runway.