When dialing from a Travelers Aid desk, just dial the last 5 digits

Non-EMERGENCY703-41(7-2400)
Travelers Aid Office703-41(7-3975)
Terminal1 Desk703-41(7-3972/73)
Checkpoint South703-41(7-1806)
703-910-1814
Checkpoint North703-41(7-1806)
703-910-1813
Baggage North703-41(7-2667/2668)
Baggage South703-41(7-2664/2665)