Brittany Cartwright and Mark Estes chat with ET’s Brice Sander about ‘Special Forces: World’s Toughest Test, ‘airing Sept. 25 on Fox and streaming on Hulu. The pair open up about why they needed to hitch the present and what they’re taking away from collaborating. Plus, Brittany offers an replace on her courting life and the place she stands with ex Jax Taylor.
