[s2e10] Operation Mainbrace | 360p 2027 |

In the gripping season finale of Project Blue Book , titled Dr. Allen Hynek and Captain Michael Quinn find themselves at the center of a high-stakes naval exercise that nearly ignites World War III.

See the massive scale of the naval maneuvers and the unexplained phenomena that plagued the exercise in this look inside the season finale: [S2E10] Operation Mainbrace