A new study by the Scientific Coalition for UAP Studies (SCU) of Unidentified Anomalous Phenomena (UAP) activities between 1945 and 1975 shows a shift toward nighttime activities. It suggests possible human behavioral studies by the UAP.  

This paper provides an assessment of indicators associated with UAP reports, described initially as Unidentified Flying Objects (UFOs) and contemporarily as Unidentified Anomalous Phenomena (UAP), included in the Scientific Coalition for UAP Studies (SCU) Activity Pattern Study.