Before the Broncos took to their indoor fieldhouse to begin their second week of OTAs on Monday, Vic Fangio asked his players to be cognizant of the guests he had in attendance. Shake a few hands, he told them. Feel free to mingle.



When the players and coaches sauntered onto the turf, awaiting them was a crowd of more than 130 high school coaches from 64 schools across Colorado, all standing behind a yellow rope along the sideline. Nearly a dozen coach at the highest classifications — 4A and 5A — but a handful of others coach 6-man and 8-man.



Many traveled hours to see a Fangio-run practice and to pick the coach’s brain about scheme and football philosophy, practice structure and general development.



Many were probably in the same fieldhouse earlier this month for a high school coaches clinic led by Fangio, and many were probably in the team’s weight room last week for another clinic on training and nutrition.



For the Broncos,...