This is a pretty sad rendition of anything "Tunnel Rat". Anyone who has done the research or visited tunnels in Vietnam would know that not much of those tunnels held anyone above 5 foot tall. Here we have a giant man with a dual tank flamethrower throwing his weight around that wouldn't have fit in the spaces in the first place. That along with more tall men with rifles??? These tunnels held very little in the way of spaces for anyone to survive. The traps were basic at best. The movie lighting was a fail. It was hard to watch. I was hoping for some reality (as it was based on real events), which never came. Fail.