I volunteer at the National Parks Board, here in Singapore, and every now and then I get involved in nighttime surveys in one of our nature reserves. Once the sun went down, on a hot, humid evening in June, our five-man team began our hour-long survey, looking for the secretive mammals that make the reserve their home. The task was simple, follow a designated trail, keep noise to a minimum, and engage in "spotlighting." All you need is good eyesight and a good flashlight. Just shine the light everywhere, and hope to catch "eye shine" from some animals. Easier said than done.
I had the benefit of drawing upon my arsenal of SureFire flashlights and selected my Z2-S and T1A Titan® for the mission. The throw and run time of the Z2-S was unrivaled, and my T1A on a lanyard provided a variable light for close-up work and served as an excellent backup. After two hours of searching, two bright eyes up in a tree were reflecting light back at me. Four other searchers, who weren't using SureFires, walked right pass the tree and missed the eyes altogether. I, however, lit up an Asian Palm Civet Cat and took a few photographs before it scampered off. That, by the way, was the most significant sighting of the evening.
See the Z2-S and the T1A flashlights: