That warning is heard in a voiceover at the beginning of the first trailer for Season 4 of Fox’s celebrity competition series Special Forces: World’s Toughest Test.

'Special Forces: World's Toughest Test' announced their season 4 cast that includes Jussie Smollett, Teresa Giudice, Gia Giudice and Kody Brown. Here's everything to know about 'Special Forces ...

However, Special Forces switched things up for season 4 and cast a few pairs that enter as families but competed individually.

Shawn Johnson East is pulling back the curtain on her and husband Andrew East's upcoming stint on Special Forces: World's Toughest Test season 4. "OK, we've been keeping a secret, and it's out ...