'The Big Bang Theory' season 10 episode 23 spoilers: Leonard, Sheldon, Howard finally complete their air force project

Promotional image for "The Big Bang Theory." Facebook/thebigbangtheory

The guys celebrate after completing their top secret government project in the upcoming episode of "The Big Bang Theory" season 10.

Titled "The Gyroscopic Collapse," next week's episode will see Leonard (Johnny Galecki), Howard (Simon Helberg), and Sheldon (Jim Parsons) finally finish their air force project. However, the trio's celebration is cut short by an unpleasant surprise. Meanwhile, Amy (Mayim Bialik) is offered a summer position as a visiting researcher in another university. "Breaking Bad" alum Dean Norris reprises his guest starring role as Colonel Williams.

CBS recently released a new sneak peek for the new episode. It opens with the group making a toast for the completion of the air force project. The next scene cuts to Penny (Kaley Cuoco), Amy, and Bernadette (Melissa Rauch) walking in the park, possibly talking about Amy's career move. The clip also shows Amy sharing a kiss with Sheldon.

At some point in the teaser, Bernadette asks the guys what happens next after their project is done. "We see the movie based on our lives starring more attractive versions of us," Howard tells his wife. Things immediately take a turn for the worse when Leonard, Howard, and Sheldon discover that their top secret project is missing. "The movie did just get good," Howard declares at the end of the promo.

Thursday's episode saw Sheldon attempt to keep his mind sharp. In "The Cognition Regeneration," Sheldon lost his edge at online gaming and tried some activities with his friends to improve how he thinks. He baked with Raj (Kunal Nayyar), juggled with Howard, and learned to ride a unicycle. Sheldon also wanted to try stilts, but Amy convinced him to just focus on living well.

Additionally, Penny's ex-boyfriend Zack returned and offered her a job. Leonard reluctantly supported her, but Penny still failed to get the job. It turned out Zack's fiancée did not want him to work with any of his former girlfriends.

The 10th season of "The Big Bang Theory" airs every Thursday at 8 p.m. EDT on CBS.

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