Shortly after the foiling of the 2015 Thalys train attack earlier that year, Sadler made an appearance on
The Tonight Show Starring Jimmy Fallon with host
Jimmy Fallon in September 2015, discussing his role in disarming the gunman. Months later in 2016, Sadler,
Alek Skarlatos and
Spencer Stone started working on a memoir, titled
The 15:17 to Paris, detailing the events of the train attack.
Perseus Books Group, which published the book, described the memoir as "the gripping true story of a terrorist attack that would have killed more than 500 people if not for their actions, but it is also the story of three American boys, their friendship, and the values we hold dear."
David Steinberger, president and chief executive of Perseus Books Group, said that he was "confident that this is going to be a film. It's extremely cinematic, and there's a lot of interest in the movie." Sadler made an appearance on
Who Wants to Be a Millionaire in October 2016 as a part of a special "Hometown Heroes" week. Playing as a team with Skarlatos and Stone, they won $250,000. In July 2017, it was announced that
Clint Eastwood would direct the upcoming biographical
film titled after Stone, Skarlatos and Sadler's memoir, starring the three authors as themselves, along with actresses
Jenna Fischer and
Judy Greer. Filming began on July 11, 2017, and the film was released on February 9, 2018. When asked about casting the trio as themselves in the film, Eastwood stated that he was considering casting actors, "But I kept looking at the faces of these young men...it just struck me that it would be an interesting experiment." The film received a generally negative reception from critics, who were largely critical of the acting by the three leads. On December 10, 2021,
CBS announced that he along with
Spencer Stone would compete on the
33rd season of
The Amazing Race. They completed three legs of the race before filming was shut down on February 28, 2020, due to the
COVID-19 pandemic. When production resumed 19 months later in September 2021, Sadler and Stone, along with three other teams from their season, were unable to return to the race due to extenuating circumstances; in their case, a recent promotion at Sadler's work left him unable to take the required time off for filming. == Bibliography ==