The Test Science Team is located in IDA Corporate Offices Institute for Defense Analyses (IDA) 730 East Glebe Road Alexandria, VA 22305 703-845-2000 Visitors and Security Clearance Visit letters passing clearance information should be faxed to 703-845-2588 (nonsecure fax). If you are sending a letter electronically, the IDA SMO Code is 7A2934. To verify receipt of a visit letter, call 703-845-2000 or 703-845-6900. View IDA’s website for more information 2020-01-21