Summary:

When UFOs and USOs (unidentified submersible objects) begin plaguing a massive naval exercise on the border of Russian waters, Hynek and Quinn realize it's up to them to stop a rogue Admiral from starting World War III.

Rating: 7.60

Project Blue Book

Status: Ended

First Aired: 2019-01-08

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Episode Name : Operation Mainbrace

Airdate: 2020-03-24

Episode Number: 10

Type: regular