Most people don't hold up well under stress like that. It's uncommon that kidnapping victims resist, or even scream, for example. It's a weird psychological dynamic at work. I saw a car wreck where a guy had slammed right through a pole holding up power lines. A line broke and was dangling near the car. The guy might have been electrocuted, a fire might have started... not even considering the guy's other injuries from the crash itself. There must have been 20 witnesses, and nobody so much as called 911 on a cell phone. I ran over and pulled the guy from the car (after checking him for neck/spine injury, etc), and it turned out OK, but it might have been the case that the guy got roasted alive with nobody to help him. I don't know that I'm so much braver than other people, but I've been in enough bad situations that I don't give in to panic any more (I trained as a basic EMT/medic as well). It's just something that most people never have to learn to overcome.