this be the main reason why writer and director and producer need to consult professional and the need to hire technical advisor . be it about pump out crap for the almighty dollar with no realism . a 10 year old learn enough science and know how to shake their head at the bad direction and realism and science . emp do not blow thing up . lol go back to school learn military protocol this be a joke . the rock climb technique demonstrate by the actor demonstrate a willful disregard for accuracy . i be sick and tired of the power that be produce crap just for the sake of a story to put on tv . put more effort into it learn something from ridley scott .