The fourth grade of commissioned officer and first of the field grades is indicated by a gold oak leaf on the collar points. The pay grade is O-4 and is the same in the Army and Air Force. In the Navy and Coast Guard, the rank is lieutenant commander and is additionally indicated with two broad bands of gold with one narrow band between them, topped with insignia representing the branch to which the officer is assigned (most often a gold star in the Navy) or a gold shield in the Coast Guard.