Alec Baldwin was originally slated to play the real life character, John Walcott, but dropped out of the project the day before shooting was set to begin due to scheduling conflicts.
Tommy Lee Jones plays the real life character Joseph Lee Galloway. The same character is played by Barry Pepper in We Were Soldiers (2002).
The film reunites the main team from LBJ (2016): actor Woody Harrelson, director Rob Reiner, and screenwriter Joey Hartstone.