Which rank's collar device is described as having a silver shield with stars?

The rank described as having a silver shield with stars is the Master Chief Petty Officer. This insignia signifies a high level of experience and responsibility within the Coast Guard. The silver shield often represents a symbol of authority, leadership, and a commitment to the values of the Coast Guard. The stars on the collar device typically denote the rank's seniority and status among enlisted personnel, indicating that the individual has reached the highest non-commissioned officer rank.

In contrast, the other ranks mentioned have different insignias that do not include a silver shield with stars. For instance, the Chief Petty Officer's insignia features a distinctive eagle and a rating badge, while the Senior Chief Petty Officer includes a gold star, but lacks the combination of a silver shield and stars that is characteristic of the Master Chief Petty Officer's device. This detailed distinction helps identify the various levels of leadership and responsibility within the Coast Guard ranks.