>> tom: we decided to visit the tallest building in iran. >> erik: within a minute or two, we were completely crushed by this sandstorm, obviously ruining the scene, we're all running inside. >> anthony: onchocerciasis, aka river blindness. >> steed: the chance of like a government shutting me down. >> lydia: earthquake, train wreck. >> tom: the whole building starts moving like this. pieces of the roof ripping off. >> step away from the glass. >> anthony: jaundice, liver function problems, and something called man flu. >> josh: we landed on the ground and i met the fixer. she said, "great to meet you guys. also, josh, everyone has cancelled." >> mo: oh, and we got all our gear stolen. >> josh: there was something about "parts unknown," and i think it was just the nature of the show, that embraced chaos. >> tom: if there wasn't this element of chaos and intensity to the shoots, then i don't know, there was some intangible energy that came from that. >> chris: without a doubt, we succeeded at the ability to quickly veer off plan "a" and find our way to plan "f" and make something of it. that's why the show was good. >> anthony: all right, are you up? are you filming?