Directive to Customs, Coast, and Border Districts Regarding Reporting of Space Projectiles

This document, issued by the Royal General Customs Board (Kungl. Generaltullstyrelsen) on October 29, 1946, serves as an official directive to the heads of customs, coastal, and border districts regarding the reporting of observations of 'space projectiles' (rymdprojektiler). The directive outlines specific data points to be collected during observations, including the color of the light or smoke, whether the phenomenon appeared steady or intermittent, and any associated sound phenomena such as noise, bangs, or hissing sounds. Observers were also instructed to measure the time elapsed between the first sighting of the phenomenon and the perception of any sound. Reports were to be submitted immediately to the Air and Air Defense Department of the Swedish Defense Staff (Försvarsstabens flyg- och luftförsvarsavdelning). The document provides specific contact instructions, including telephone numbers for the military staff building in Stockholm. For more extensive observations, a summary was to be sent by post to the Defense Staff. Finally, the document explicitly states that matters concerning space projectiles are to be treated as confidential.