Definition #1 for "advanced aviation threat identification program"
The Advanced Aviation Threat Identification Program was a secret investigatory effort funded by the United States government to study unidentified flying objects, but it was not classified.
Definition #2 for "advanced aviation threat identification program"
Advanced Aviation Threat Identification Program (AATIP ) refers to investigations conducted by the United States government into various unidentified flying objects, which ran from 2007 to 2012. In December 2017, the program was made public in articles published by Politico and The New York Times, along with video footage of a Navy encounter with a high-speed unidentified flying object.