For what collar device would you find two blue breaks?

The collar device with two blue breaks corresponds to the rank of Chief Warrant Officer 3 (CWO3). In the Navy, the rank insignia for Chief Warrant Officers consists of a green and silver insignia featuring breaks that indicate their rank level. Each additional blue break indicates a higher rank among the Chief Warrant Officers.

For CWO3 specifically, the insignia features two blue breaks, which signifies that the officer has achieved this particular rank. Understanding rank insignia is crucial in the Navy, as it helps recognize the hierarchy and experience levels among service members. The insignia's design ensures that each rank is visually distinct, aiding in command and respect within the naval structure.