Garett Bolles protects more than just Bo Nix. The Broncos starting left tackle recently stepped up to help a stranger in need. You’ve probably seen the TikTok video at this point. Last week, it surfaced on social media with the caption (translated from Spanish): “Thanks to this Denver Broncos player who helped me change my tire, he’s an angel. God bless him.” The short video is a glimpse into the roadside assist: Bolles sits on the asphalt. He turns a tire iron to tighten the lug nuts on a spare. A teenager stands over his shoulder watching the process. So, why did Bolles do it? The longtime Broncos offensive lineman explained why Tuesday night at Empower Field. Bolles spoke at a clinic for Denver area high school football coaches, administrators and athletic trainers about year two of the “ALL IN, ALL COVERED” helmet initiative . He addressed the viral moment during a panel discussion. “It’s always good to do something good for people.…