Official websites use .gov

Official websites use .gov
.gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

Secure .gov websites use HTTPS
lock (Lock Icon) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

This historic image shows concrete barriers, wire fencing, and other obstacles on the beach.

The concrete barriers
The concrete barriers