What is the minimum rank of the president of the E-7 selection board?

The minimum rank required for the president of an E-7 selection board is Captain. This is established by Department of Defense directives and Navy regulations which dictate that to ensure a proper level of authority and experience, a Captain (O-6) must preside over such boards. The role of the president is crucial as they lead the board in making important decisions regarding promotions to E-7, and having a senior officer helps ensure that the process is conducted with the necessary level of oversight and professionalism. Higher ranks such as Admiral could also serve in this capacity, but the key aspect is that a Captain meets the minimum requirement for this position, ensuring that the board operates effectively within the service's standards.