Linkedin is the best for those kind of photos, even better when you Facebook there name out of pure interest and you see the same "professional cpo" lad, naked, collapsed in a pile of there own piss with a beer bottle up there bum.
First thing I look for is the Airborne tat on his arm or maroon lid........
I'd say its a service wide thing...although no one else does it with quite as much...style(/pride?) as the paras or booties.