Captain (United States O-6)
In the United States Navy, United States Coast Guard, United States Public Health Service Commissioned Corps (USPHS), and National Oceanic and Atmospheric Administration Commissioned Officer Corps, captain is the senior-most commissioned officer rank below that of flag officer. The equivalent rank is colonel in the United States Army, Air Force, Space Force, and Marine Corps.
U.S. Coast Guard Captain Jessica Rozzi-Ochs of USCGC Eagle, left, and U.S. Navy Commander Billie J. Farrell of USS Constitution, right, were the first female commanding officers of their respective ships.
Navy submarine captain Michael Bernacchi, serving as a chief of staff to a flag officer
United States Public Health Service Commissioned Corps
The United States Public Health Service Commissioned Corps is the uniformed service branch of the United States Public Health Service and one of the eight uniformed services of the United States. The commissioned corps' primary mission is the protection, promotion, and advancement of health and safety of the general public.
Service dress blues
Summer whites
Service khakis
Operational Dress Uniform