Question#2

Gun experts, Professional Snipers, and Sharp Shooters, please enlighten me as I really don't get it:
If the piercing in Trump's ear is the result of a bullet ricocheting, then, how can it pierce it ( making a circular penetration) without reaching his skull?
I mean a bullet's ricochet can take off skin, flesh, or just a simple abrasion, however, at which angle did the shooter fire that made a hole-like mark on his ear and bounced out?!