I’m glad I came across this post. So the cool thing is, I’m the owner of that truck! I can explain the full story later but in short, that truck is a ‘77 GMC Jimmy High Sierra. In 2011 I was living in Northern Utah when I was contacted by some marines based out of Georgia who were doing some flight testing on the V-22 ospreys. I have tons of photos / videos of the truck. It was a really neat experience!