Josh Brolin was cast in the movie as a baseball coach but his scenes ended up being removed after a test screening. George Clooney admitted that his scenes deflated the tension from the movie and felt badly to remove Brolin from the final cut as he considered the scenes one of the funniest in the entire picture.
George Clooney screened this film for famed television writer/producer Norman Lear, no stranger to projects tackling explosive or controversial themes like his series All in the Family (1971). After viewing the movie, Lear told Clooney "This is the angriest film I've ever seen."
The radio drama playing in the kid's room is an episode of Suspense from August 31, 1958 called The Whole Town's Sleeping, based on a short story by Ray Bradbury , narrated by William Conrad and starring Agnes Moorehead.
George Clooney hosted the wrap party December 3, 2016 for the Productions Cast and Crew at The Smokehouse Restaurant in Burbank which his production company is named for and is located across the street from Warner Brothers Studios where the production offices abs stages for the film were located. The host himself narrated for all in attendance a behind the scenes slideshow of the productions activities on set.