Season finale. Tensions between the U.S. and the Soviet Union reach an all-time high on the moon, throwing multiple missions into jeopardy.

Alex Alomar Akpobome, Alexander Babara, Alexander Sokovikov, Charlie Schlatter, Chris Cortez, Connor Tillman, Daniel David Stewart, Dave Power, David Chandler, Ellen Wroe, Eugene Alper, Jeff Hephner, John Marshall Jones, Josh Duvendeck, Juliet Brett, Kayla Blake, Leonora Pitts, Linda Park, Michael Benz, Michaela Conlin, Nick Toren, Nikola Djuricko, Noah Harpster, Piotr Adamczyk, Scott Michael Campbell, Tim Jo, Timothy Ware-Hill