Cap Decoration Hawaii Can Anybody Wear This Kind Of Cap?

Can anybody wear this kind of cap? - cap decoration hawaii

Can a separate civilian and a combination of the PAC-mate (without insignia or decorations upon him)? (The link below shows how they appear)

Or just clean the screen or even ...

or only military personnel can click on the PAC?

because I have some drivers and other people with this type of APC, but not on the design ..

Please answer my question. Thank you.

Here's the link:

http://www.williamscully.ca/gallery2/d/12822-2/constable_forage_cap.jpg