The Cambodian raids were carried out at night under the direction of ground units using the MSQ-77 radar, which guided the bombers to their release points and indicated the precise moment of bomb release. This made deception easier, as even crew members aboard the bombers did not have to know what country they were bombing. However, the specific flight coordinates (longitude and latitude) of the points of bomb release were noted in the navigator's logs at the end of each mission, and a simple check of the map could tell the crews which country they were bombing.