I am an 82-year-old man who was violently punched on the back of

Rio Grande - I am an 82-year-old man who was violently punched on the back of the head and fell to the floor while standing in line at a Rio Grande establishment. This man was a stranger to me and witnesses, and the surveillance video can attest that it was completely unprovoked. I want to express my gratitude to the helpful personnel at the establishment and especially the two men who risked their own safety by running after and detaining the man until police arrived.