1. The subject briefing was given by Mr. (P. G. Strong,) assisted by Mr. (F. C. Durant,) at 1000 hours, 29 January. A history of O/SI interest in and action on this subject was followed by a showing of the motion picture films of sightings at Tremonton, Utah, and Great Falls, Montana. Copies of the Report of the Scientific Advisory Panel on Unidentified Flying Objects had previously been made available to the Board. This briefing was given for background prior to the ONE requested briefing by ATIC scheduled for 0900, 30 January.