He was the offensive line coach and run game coordinator for the Minnesota Vikings of the National Football League (NFL) from 2019 to 2020.

A linebacker who spent his entire NFL playing career in Denver from 1982 to 1990, he appeared in Super Bowls XXI, XXII, and XXIV.

[4] The younger Dennison starred in football, baseball, and basketball at Rocky Mountain High School where he graduated in 1976.

Wearing uniform number 83 and primarily a tight end for head coach Sark Arslanian, Dennison also saw some action as a wide receiver.

He was both a second-team Academic All-American and the recipient of the Merrill-Gheen Award as the university's most outstanding male scholar-athlete in his senior year.

[9] In January 2015, Dennison returned to the position of offensive coordinator with the Broncos following the hiring of Kubiak as head coach.

[11] After the retirement of Kubiak following the 2016 season, Dennison was replaced by former San Diego Chargers head coach Mike McCoy as the Broncos' offensive coordinator.