I work as a police officer and responded to a crash on a major highway. The car had overturned and the driver was trapped inside. EMS hadn't arrived and we needed to get inside to the driver. I ran back to my patrol car and got my LMF II, figuring that if it could cut an airplane fuselage and helicopter canopy and all the stuff it advertises, then I might as well give it a try. I jammed the knife as hard as I could in between the door and the frame and kicked the handle as hard as I could. Pop, it opened the door. And the knife had absolutely no marks, dings, scratches or other signs of abuse.This is a great knife.