Sadly Al Moulton passed away last year. The closest dojo to you will either be in Northern Va (Nestor Folta or John Carria) or in DC (Bob Kaiser) or in Rik Lostritto in Gaithersburg.
I hope I haven't missed anyone...
I train at the Washington Karate Academy (Bob Kaiser's school, Mr. Nakamatsu's lineage.) You'd be welcome to drop by and visit a class anytime.