Please feel free to visit our membership sites. NATIONAL ASSOCIATION OF INVESTIGATIVE SPECIALISTS P.O. Box 33244 Austin, TX   78764 NATIONAL CENTER FOR MISSING AND EXPLOITED CHILDREN 699 Prince Street Alexandria, VA   22314 TEXAS ASSOCIATION OF LICENSED INVESTIGATORS, INC. P.O. Box 702641 Dallas, TX   75370 TEXAS DPS PRIVATE SECURITY BOARD PO Box 4087 Austin, TX   78773-0001