The preceding modeling data was computed by an independent consulting firm and is based on near perfect conditions and industry standards, ie., 30% contrast, 50% probability, and 99% transmission/km. The computations are derived from those used within the US Army Night Vision Laboratories in Fort Belvoir, Virginia, from a computer modeling program based upon the Johnson Criteria, and guidelines established with reference material such as the RCA EO Handbook. The distances are theoretical and should be downgraded according to atmospheric conditions by approximately 40% for day ranges and 20% for night ranges. The data is also based on the use of 640 x 480 CCD cameras and Gen 3 Omni IV image intensifier tubes.

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