Dusty loves the desert. It is clean, pure, and unforgiving. Unlike Vegas which is always willing to give you a second chance. Dusty was working as a refrigerator repairman and studying desert ecology at night when his pre-enlistment application for the G. I. Joe Team was approved. He took Basic at Fort Bliss, Texas and loved every minute of it.
It's not enough nowadays to have a rapid-reaction force respond instantaneously to explosive situations in far flung corners of the globe. That force must be capable of surviving in a diverse array of hostile environments to accomplish its objectives. If that means having one expert for every type of environment on every team to take on survival responsibilities on that terrain, then so be it. Qualified expert: M-16, M-14, M-60.
Law & Order
Law & Order walked a beat in Houston's Fifth Ward for two years before Law decided that there must be a more fulfilling way to be a cop, so he and his canine "Order" enlisted for the Military Police. Law is a trained dog handler with a natural affinity for animals. He is also Airborne qualified.
M.P.'s are responsible for the security of an installation. That may sound like a cushy job if all they are guarding is a garrison full of clerks, cooks, and accountants, but it's another matter altogether when they're acting as the defensive line for an elite unit like the G. I. Joes. The bad guys are going to send in the best they have and that's not good enough to get past Law & Order. You don't want to mess with him and that dog of his. Chew your leg right off, he will. After that, you still have to deal with the dog!