Final answer:
Authorized devices for wear on the Navy Expert Rifleman and Expert Pistol Shot Medals include a silver 'E' for initial expert qualification and a silver 'E' with a wreath for subsequent qualifications.
Step-by-step explanation:
On the ribbon bar of the Navy Expert Rifleman and Expert Pistol Shot Medals, naval personnel are authorized to wear a special marksmanship device. The device varies depending on the level of proficiency achieved. For those who qualify as experts, a silver 'E' is awarded for the first qualification and a silver 'E' with a wreath for subsequent qualifications. Marksman and sharpshooter ratings will have different devices, such as an 'S' or a crossed rifle and pistol, respectively).