This man was in charge of the Photo Reconnaissance Lab, Weapons Components Division of ATIC, at Wright Air Development Center and, according to Capt. Edward J. Ruppelt, did all of the work on UFO photos for Project Blue Book, including the Lubbock Lights, Coast Guard Alpert photo, and the top secret Tremonton (Utah) film, from October 1951 to October 1952. Although a firm "believer", Ruppelt said Chapman did do a good job of making unbiased analyses of Blue Book's photos.