The knives that came in our demo boxes had a flat edge. It took forever to get a edge on them. And they would rust damn near right before your eyes.It's supposed to be dull. Can't have the AF pilots cutting themselves.
The switchblade they issued back in the day was also dull, don't know anybody could ever get it to hold an edge. Only good thing on it was the hook blade for cutting parachute shroud lines.