I do not agree. He was military temporarily assigned to a post in WA (temporary because he maintained AR residency). Standard laws do not apply.
Standard laws don't apply? Care to share just what special laws you believe apply?
It doesn't matter if he was a resident of Washington, Arizona, or Timbuktu. He signed a contract within the boundaries of Washington so their laws apply. Arizona laws apply to some matters of the situation if op is sued in Arizona. Given the contract was signed in Washington he can be sued in Washington or since op is currently a resident of Arizona he can be sued in Arizona.
If sued in Arizona their sol applies if there is no borrowing statute that would invoke the washinton sol. If sued in Washington the washington sol applies and right now, due to the tolling statute I posted previously, the clock is currently tolled.
Toxinburn83
The law I posted is a Washington law. It applies because you signed the contract while in Washington. It doesn't matter what your state of residence is. It is the same in any state. If you travel to Delaware tomorrow and sign a contract there, their laws apply to that contract. It's if an entity from another state tries to sue you in an Arizona court that Arizona laws apply. Since you signed the contract in a state other than Arizona, you can be sued in that state. There are special rules that might allow you to avoid a suit brought in another state but that is a very fact specific determination. If you cannot be required to answer to a Washington court, the clock continues to be tolled (stopped). Then, if you are ever in Washington you can be sued, even years after the 4 years sol expires.
Personally I do agree that you might consider not paying it. Not only is it unlikely they would sue you in Arizona for the little amount involved, I doubt they would sue you at all. It's likely the debt was sold and the debt buyer is trying to get debtors to pay on old debts that are nearly impossible to collect. I think your VA disability pay is safe from garnishment so unless you have other income or property worth attempting to take, they can't even collect on a judgment.
Even if you have assets available, it's likely to cost more to actually collect on the judgment than they can recover.
Additionally, if you make a payment on the debt it will resurface on your credit report. If that matters to you I would seriously hesitate paying anything.