Oh, that infamous USAF survival knife. He might have mentioned the sawback is for cutting through aluminum bodied aircraft, not only for egress, but possible scavenging. The blade thickness is also matched to standard 550 paracord and if you notch wood before lashing it's usefull. The double guard is a PITA and everyone wants to lash a stick to it and hunt wild boar. Your better off grinding the top off. A small stump will leave the assembly nice and tight. Otherwise suprise! looping a lanyard there is actually safer than at the butt where we have a decent hammer. As for low bidders, Camillus and Ontario make these. USAF knives marked JAPAN or TAIWAN ARE NOT highly collectable service issue for those nations.Ontario has a slightly more robust clip point but Camillus uses a higher RC steel. You might have heard of Camillus, they make several of Cold Steel's products. The pocket sharpening stone is easilly modified for improved use. First unsnap the flap. Second remove stone and finally step number three throw it away. Get a small diamond two sided plate and use the now empty pocket for a small metal match and other goodies. Resecure snap with a dab of grease. If the leather handle is loose soak in water. Dress handle and sheath in a good conditioner. Sharpen the blade. Removing that phosphate is another PITA but usefull guide of progress. Apply a thin film to the now shiny blade. If your a Indochina vet the only vietnamese likely to see it is also likely a member of the SAR team looking for you. Flash it often, like Stallone in Rambo.