Final answer:
The Navy Expert Rifleman and Expert Pistol Shot Medals may have an E Device on the ribbon bar to indicate expert qualification, with additional bronze or silver E Devices signifying repeated requalifications at the expert level.
Step-by-step explanation:
The Navy Expert Rifleman and Expert Pistol Shot Medals are awards bestowed upon personnel of the U.S. Navy who attain high scores in marksmanship competitions. For those who achieve expert qualification, the ribbon bars for these medals may include an E Device, which signifies expert qualification. In addition, once the initial expert qualification is obtained, subsequent requalification or sustainment of that level may be denoted with bronze or silver E Devices, indicating multiple expert qualifications over time.
On the ribbon bar of the Navy Expert Rifleman, silver "E" Devices are worn for those who have requalified at the expert level five times. Similarly, for the Expert Pistol Shot, a silver "E" denotes this level of sustained expert performance. This system allows other service members and officials to quickly recognize the recipient's level of proficiency with rifles or pistols.