At the first radio meeting between Hummel and the conference room chiefs, he says he's aware of the counter measures and they both no they wont stand a chance. Then one General explains that normally chemical weapons would be distroyed and consumed by napalm, but VX was "designed specifically" to resist napalm. A few minutes later, when Goodspeed is asked at the airfield what he knew about VX, HE says it was "discovered by accident" in 1952 while making insecticide. So who's right?