Featured in the film is Sonny West, Elvis' lifetime body guard and part of the "Memphis Mafia". He was fired in Elvis' last days because he tried to get him off drugs and never had a chance to say good bye. In the movie he did and actual tears came to his eyes. Sonny passed May of 2017.
This is the only film Alexander Butterfield has appeared in. Alexander Butterfield served as the deputy assistant to President Richard Nixon from 1969 to 1973. He revealed the existence of the White House taping system on July 13, 1973, during the Watergate investigation. He is said to be the catalyst that caused the resignation of the president at the time.