sentences:  Kollar has 34 years of coaching experience, including the last 28 seasons coaching defensive linemen in the NFL.Before coming to Denver in 2015, he coached the defensive line for Houston (2009-14), Buffalo (2006-08), St. Louis (2001-05) and Atlanta (1990-2000).Kollar grew up in Warren, Ohio and attended Warren G. Harding High School, graduating in 1970.