I'd love to build something like this out at my dads. Now his is wooded, ponds, creeks, meadows and such, but a great obstacle and tactical training site could easily be built on his 160 acres which is 1/2 mile wide by 1/2 mile deep.
One of my cousins that I haven't seen in over 40 years and lives in IN. We communicate for the last 2 years on FB. He hasn't said how many acres, but he's into guns and he calls his property, The compound. He's got vaious targers around the property and has obstacles set up and he does drills in those scenarios. I'd like to go visit him one of these days. My dad will never allow such a thing, he's a So Cali retired union worker, in short brainwashed libtard hipocrit.