Because Durning was also working on 's , Lumet and Wise had to coordinate his schedule, as he flew between California and New York.
For the film's fortieth anniversary, a two-disc was released in 2015.
Lumet had access to the footage of Wojtowicz and Eden's ceremony, originally broadcast by at the time of the robbery, which featured Wojtowicz in his army uniform presenting a wedding ring with a to Eden, who wore a wedding dress.
The international flights that headed to the main runway had to go around the shooting location.