what can go wrong. >> josh: will go wrong. things went wrong. they want us to stop filming right now. >> zach: on the one side, you have control. on the other side, you have chaos. and always between control and chaos is where the show is moving. >> josh: sometimes, it collapses. >> chris: political unrest. bird flu. >> anthony: then there's leptospirosis, which is an infection carried by rat urine. >> sandy: i mean, every shoot had things go wrong. >> josh: i think it was shanghai. >> jeff: my heartbeat is going up right now even thinking about it. >> 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.