Movies Titus Welliver and Mark Wahlberg faced their fear of heights together on Transformers: Age of Extinction By Lauren Huff Lauren Huff Lauren Huff is a writer at Entertainment Weekly with over a decade of experience covering all facets of the entertainment industry. After graduating with honors from the University of Texas at Austin (Hook 'em, Horns!), Lauren wrote about film, television, awards season, music, and more for the likes of The Hollywood Reporter, Deadline Hollywood, Us Weekly, Awards Circuit, and others before landing at EW in May 2019. EW's editorial guidelines Published on May 3, 2020 11:00AM EDT Watch the full episode of Couch Surfing streaming now on PeopleTV.com, or download the PeopleTV app on your favorite device. Some people fear snakes or clowns. For Titus Welliver and Mark Wahlberg, however, it's heights that frighten them. The two discovered their mutual fear while shooting Transformers: Age of Extinction together. Speaking recently with PeopleTV's Lola Ogunnaike, Welliver opened up about his experience shooting the 2014 blockbuster. "I’ve never run or had such a physically demanding role," the Bosch actor said. "Mark and I tried to do as much of that stuff as we could that was safe, but we both hate heights." Welliver said that he and Wahlberg bonded over their nerves during an action sequence in the film that takes place on a rooftop. "At one point between takes we were both leaning against the wall just facing the wall because neither one of us wanted to turn around and look behind us to see the drop," he recalled. "Mark turned to me at one point when we were there and he went, 'Yeah a couple of real tough guys.' And I went, 'You know, when it comes to this, I’m not even going to try and front like I don't have an issue with it.'" The film, which was directed by Michael Bay, also starred Nicola Peltz, Jack Reynor, Stanley Tucci, and Kelsey Grammar. It was the fourth film in the popular Transformers series. For more with Welliver, check out the video above, and watch his full episode of Couch Surfing here. Related content: Transformers: Age of Extinction star Jack Reynor revisits that awkward age-gap joke: 'It’s definitely problematic' Mark Wahlberg docuseries Wahl Street coming to HBO Max Mark Wahlberg smashes crime and logic in Netflix thriller Spenser Confidential: Review