Abstract : Night vision goggles (NVGs) have been employed in a variety of aircraft for over 20 years. However, only recently has their application begun in fixed-wing fast movers. Research accomplished by the Aircrew Training Research Division of the USAF Armstrong Laboratory demonstrated the loss of NVG performance resulting from improper adjustments. This report describes correct adjustment procedures for the Aviator's Night Vision Imaging System, or ANVIS. The procedures described were developed so aircrews could take advantage of the adjustments available on the NVGs. Additionally, image descriptions are given to help aircrews evaluate NVG performance. Information on the proper equipment/ space needed for proper evaluation is also included. Adjustment procedures, Focusing procedures, AN/AVS-6, NVG. Alignment procedures, Interpupillary distance, ANVIS, Diopter, Night vision devices, IPD, NVD, Eye lane, Night vision goggles