- Private Investigator 31 July 2002 - 30 August 2002 D&D Security / Training Academy Inc 1420 Prince Street, Second Floor Alexandria, Virginia 22314 (877) GO DDSTA (703) 836-2600 FAX (703) 837-0099 Department of Criminal Justice Services Number 88-1202 / 11-2595 ...www.ddsta.com