His company buys these things and then has a contract with the Navy for when they do training. So IF I'm reading this correctly, it's not just some random dude buying all this stuff for fun, it's his company and they have a very clear business purpose for doing this.
"He was also one of the early pioneers of the then-fledgling, if not wholly experimental, adversary air support market. In the early 2000s, he joined forces with the Airborne Tactical Advantage Company (ATAC), which was blazing a trail with their contracts with the Navy to supply fast jet targets and electronic warfare pod toting adversaries that mimic everything from enemy cruise missiles to fighters for Navy and Marine fighter aircraft and Navy surface combatants to train against. "
"He was also one of the early pioneers of the then-fledgling, if not wholly experimental, adversary air support market. In the early 2000s, he joined forces with the Airborne Tactical Advantage Company (ATAC), which was blazing a trail with their contracts with the Navy to supply fast jet targets and electronic warfare pod toting adversaries that mimic everything from enemy cruise missiles to fighters for Navy and Marine fighter aircraft and Navy surface combatants to train against. "