My guess: you've never tried to fire a gun, accurately, in a high stress, adrenaline filled situation. I challenge you to attempt to recreate a scenario like that- go to the range, do 20 pushups, sprint 20M, draw and fire at a silhouette's head within 10 seconds (a damn eternity) from 5-7M all while someone is screaming at you. Good luck... And I've had both .mil and LEO training.