THE danger zone is getting a little more crowded.

Jon Hamm, Ed Harris and Lewis Pullman have joined “Top Gun: Maverick.” Details on their roles are being kept a mystery.

The Tom Cruise sequel is from director Joseph Kosinski, who helmed the star’s 2013 sci-fi thriller “Oblivion.” Other actors already enlisted for the film include Val Kilmer, Miles Teller, Jennifer Connelly and Glen Powell.

Hamm, known for AMC’s “Mad Men,” recently starred in the action comedy “Tag,” while Harris’ HBO sci-fi drama “Westworld” wrapped its second season in June. Pullman’s credits include the horror film “The Strangers: Prey at Night” and a role in the upcoming “Catch-22” miniseries.

“Top Gun: Maverick” opens July 12, 2019.(SD-Agencies)