This photo is of a “bouncer” at one of the clubs in Kuta, Bali wielding a machine gun.
Every once and while you forget that you’re not home anymore but actually, you’re in say “Indonesia”. Many of the night clubs have guys with machine guns as their bouncers. I have never seen anything that would require a guy with a machine gun but I was only there for 3 weeks so who knows.
Also probably has to do with the large bomb then went off in Kuta a few year ago killing all too many people.
Note: To see the image larger, right click “view image”.