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Former "Mad Men" star Jessica Par is set for a key series regular role opposite Jim Caviezel in CBS’ untitled Navy SEAL drama pilot from former "Justified" executive producers Ben Cavell, Sarah Timberman and Carl Beverly and "Shameless" executive producer Chris Chulack.

Written by Cavell and directed by Chulack, the project follows the lives of the elite Navy SEALs as they train, plan and execute the most dangerous, high-stakes missions our country can ask. Par will play Mandy, a whip-smart CIA analyst driven to rid the world of evil and get the bad guys. Cast also includes Max Thieriot, Neil Brown Jr., A.J. Buckley, and Toni Trucks.

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Par, known for her starring role as Megan Draper in "Mad Men," was recently seen in Oscar-nominated film "Brooklyn" opposite Saoirse Ronan.