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.
Due to the lapse in federal funding, this website will not be actively managed. Click here for more information.
The FAA requires that liquid nitrogen be packaged in a dry shipper when transported in checked baggage. See the FAA regulations for more information.