For example, the aircraft pilot could be the junior member of a flight crew such as a USN lieutenant, junior grade/USMC 1st lieutenant or USN lieutenant/USMC captain, and the weapon systems officer could be a senior officer such as a USN lieutenant commander, commander or captain, or a USMC major, lieutenant colonel, or colonel; this would likely make the WSO the mission commander.
The pilot could be a junior member of a flight crew, such as a USN lieutenant (junior grade) or USMC 1st Lieutenant, and the weapon systems officer could be a senior officer, like a USN lieutenant commander, commander, or captain, or a USMC major, lieutenant colonel, or colonel. This would likely make the WSO the mission commander.