Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Enter the DoD ID number from the back of your common access card (CAC) into the “Known Traveler Number” field of your flight reservations or when updating your Defense Travel System profile for official travel.
DoD federal civilian employees must opt-in via milConnect before using their Known Traveler Number.