General
Show Effective Date
Off
Security Seal Inquiries
Email hmassist@dot.gov for security seal inquiries. Please include "Seal Inquiry" in the subject line of your email.
USA Banner
An official website of the United States government
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.