Upon receipt of a second sea service deployment ribbon, what device should you attach to the existing ribbon?

When a service member receives a second sea service deployment ribbon, the appropriate device to attach to the existing ribbon is a bronze service star. This device symbolizes subsequent awards, and the bronze star specifically indicates that it is the second award. The use of stars to denote additional awards is a long-standing practice in military insignia to acknowledge multiple deployments or commendations, making the bronze service star the correct choice in this instance.

In this context, the silver service star would be used for a higher number of deployments, typically indicating five awards, while a gold service star is reserved for special circumstances, such as a significant valor award. A deployment clasp is not typically used in conjunction with the sea service deployment ribbon and is meant for specific types of deployment recognition instead. Therefore, the bronze service star is the correct device to represent the second sea service deployment ribbon accurately.