Ditto ..
I recall a demo going back almost 32 yrs now, where we had a fire chief demonstrate how to go old school on a car to gain access to patients. He walked up to the car, immediately snapped off a windshield wiper, and summarily smacked that into the driver window shattering it. Then he had a race against the jaws of life .. while he used a hacksaw to cut through pillars to get the roof off. I think he won that, if I recall. Cool cat. Learned a bunch that day.
Off work, I've always been met with success with a simple roundhouse kick. Never fails .. in a boot. Even a softer soled motorcycle boot has worked.