"Rubber Room" is the name given to the emergency exit bunkers located 40 feet (12 m) below the launch pads at Kennedy Space Center's Launch Complex 39; there is one below each of the two launch pads. Built in the 1960s for the Apollo program, its purpose was to provide a safe haven for personnel on the launch pad in the event of an imminent rocket explosion, when a rapid exit from the pad was necessary and normal evacuation methods would take too long. The bunker was designed to withstand the explosion of a fully loaded Saturn V rocket on the upper pad and was capable of housing up to 20 people for 24 hours.