Yes and no. Every scenario where the attacker is closer than 21 feet with a knife outstretch and is charging to attack would be same. At 10 feet before you can get the gun out of the hostler you probably would be dead or have a knife plunged into your chest. The pregnant woman with a knife was a true story and she and her baby died for hitting the panic alarm. The car thief plunged a knife into her stomach area to kill her and the baby.