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.
Dr. Richard Meehan, Battalion Surgeon for Navy Mobile Construction Battalion 17, taking air quality measurements during a dust storm at Al Asad Air Base in western Iraq. Photograph credit: Dr. Richard Meehan, National Jewish Health
