I admit that I only quickly skimmed this very interesting and informative thread, BUT is it possible that in 11 threaded pages on SERE knives, no one mentions the first and still quintessential SERE knife...the Randall Model 18 ??? And I saw only one mention of the Model 15. Near herasay guys. For shame! Joking aside, both of those knives are, IMO, perfect for the task. I'll also add a vote for the very affordable, well built , pry bar, electric insulated, hammerheaded, knife, serrated, glass breaker, built in sharpener in sheath multi tool , known as the Gerber LMF II. Downside is that it's heavy and the balance in hand is not the best. However, it's not a dedicated fighting knife and, in a pinch, you would not be badly armed. If it had a wire cutter it would be almost perfect. I use them in my larger emergency kits precisely due to their multi functional design.