Training may help , but even intense training is no match for human nature . I worked with a Vietnam vet marine , I once asked him what its like ……..he told me this ” The first firefight I was in , I hit the dirt and was crying like a baby …………the next firefight I was in , I couldnt get enough ammo ” . This from a Marine that went through sniper and recon school . The majority of us dont have the benefit of any training at all . Truth is , we dont know how we will react until it happens . Will we make mistakes , serious mistakes ? depend on it . I have come to the realization , that you only have control over what you do , everyone else is a wild card , even those closest to you .