A light source includes a housing, an LED array of individual LED elements mounted
in the housing, and a controller mounted in the housing and coupled to the LED
array. The controller sequentially, intermittently pulses the LED elements of the
LED array. The controller over drives the LED elements of the LED array with a
current in excess of several times the continuous forward rating for the individual
LED elements. The housing is a substantially closed, waterproof, tubular member
and may include a power source in the housing. The light source may form a portable
light source. The light source may include a fiber optic bundle coupling in the
housing and a fresnel lens between the LED array and the fiber optic bundle coupling.