Guard, United States Public Health Service (USPHS) Commissioned Corps the National Oceanographic and Atmospheric Administration Commissioned Officer Corps (NOAA Corps), and various air forces (primarily those of the United Kingdom, British Commonwealth, and nations formerly aligned with the Crown) for their equivalent ranks and grades, except that the executive curl is removed (see flight lieutenant). In the United States, contingent on the type of uniform worn, U.S. Navy, U.S. Coast Guard, USPHS Commissioned Corps, and NOAA Corps lieutenants also wear pin-on metal collar, shoulder, or headgear insignia, or cloth shoulder, collar, tabbed, or headgear insignia identical to that of a United States Marine Corps captain and similar to that of a United States Army, United States Air Force, or United States Space Force captain. Gallery See also Comparative military ranks Captain lieutenant Notes References Military ranks of the Royal Navy Military ranks of the United States Navy Military ranks of the United States Coast Guard Naval ranks