Great looking truck. Love that Navy Gray (I've got a lot of cans of that on the shelf looking for home if you ever need any touch up paint... )
Although it looks like this truck has some custom rims on it with Swampers (?) mounted, they do remind one of the look of combat rims, and since the question was posed I'll toss in some semi-relevant info.
Combat rims were not fitted to the M37, but since the truck shared the same rim size and bolt pattern as the 3/4 ton WC's, you can mount them and they look just like they belong... As can be seen here. A good, well maintained combat rim is pretty easy to take apart using small hand tools, so they are nice to have, but make sure that you air them all the way down before you take them apart. The stock GY-LTS rim requires a couple special purpose tools to take apart, but they are pretty easy to work upon as well once you learn how. In both cases, old tires that had glued themselves to the rims and/or rust can make things a royal pain...
One trick that a buddy with combat rims uses is that his lug nuts have the studs painted yellow, the wheel lock ring studs are painted red... Just a little extra insurance to keep folks from loosening the wrong nuts...
Once again, a great looking ride.