Be on the lookout for the man wearing this hat. He's unreliably described. Reportedly, he so thin that he doesn't show up in most photographs. So, you'll just have to look for the hat.
He may have an item of vital interest to you and the balisong community. Make contact. Retrieve the item. Check it for sharpness.
If necessary, the only known way to defeat him is to let him shoot up your ice chest until he runs out of ammo and then jump him. Hopefully, it won't come to that.
Oh, and try to get a better photo for the files.