New Project Bluebook

 Project Blue Book was the code name for the systematic study of unidentified flying objects by the United States Air Force from March 1952 to its termination on December 17, 1969. 

The new project is called the AARO (All-domain Anomaly Resolution Office).

"The mission of the AARO will be to synchronize efforts across the Department of Defense, and with other U.S. federal departments and agencies, to detect, identify and attribute objects of interest in, on or near military installations, operating areas, training areas, special use airspace and other areas of interest, and, as necessary, to mitigate any associated threats to safety of operations and national security. This includes anomalous, unidentified space, airborne, submerged and transmedium objects."

  https://www.defense.gov/News/Releases/Release/Article/3100053/dod-announces-the-establishment-of-the-all-domain-anomaly-resolution-office/

"The AARO will serve as the authoritative office of the Unidentified Aerial Phenomena (UAP) and UAP-related activities for the DoD".  UAPs of course is what we are calling UFOs these days.