 Jenner theorizes that medical facilities worldwide may have faced similar predicaments . French doctors came the closest to finding a cure , but communication was lost . The survivors are shocked when they hear that human civilization is ceasing to exist . Later , the group confirms that the last diesel tank is running out of fuel , and a power outage ensues . Since the facility was designed to isolate unimaginably dangerous diseases , if it can 't power itself , it automatically destroys everything inside so that no diseases will get out . As they confront Jenner about their fate , Jenner seals them in the main room underground , and tells them that the decontamination procedure ( a high @-@ impulse thermobaric weapon wired throughout the facility 's air vents ) will mean the destruction of everything inside the facility , offering an instant and painless death to everyone inside . 
