MATTHEWS: No. Well, nobody watching this show thought those non-coms and the grunts did all that stuff. They didn‘t have—you know, they weren‘t creative writers. They didn‘t make up—they didn‘t bring the dog collars with them from West Virginia. They saw all that stuff when they got there, and they saw other people doing it, obviously.from here

Chris, you continue to guess and there’s no need to wonder about the collars. The US military uses dogs. The canine (aka K-9) corps has been around a long time. Here is a photo showing the use of a “leash and collar” in Baghdad. Easy to get. And nope, the MP’s didn’t have to shop at “leathers for feathers of Philadelphia.” They bring dogs and the equipment needed to control and manage these working guard dogs.Military Working Dogs at lackland