 In the scene where the tanker truck is shot and blown up, the  reactions of Sarandon, Susan (qv) and Davis, Geena (qv) were  supposed to be genuine. Rather than filming separate reaction shots,  director Ridley Scott (qv) rigged the tanker to blow up during the  take, in order to get authentic expressions of surprise from the two  leads. Despite this, they were so astonished while watching it that  they forgot to actually react, so Scott had to film their reactions  again.