Fackler made time to talk with his high school players about Heintz's death as they gathered for a weightlifting workout Wednesday morning.
Heintz, from Kenton High School in Kenton, Ohio, was getting ready to live his dream of playing college football, and his life was terribly cut short following a summer workout.
Speaking on behalf of Heintz's family, Kenton Head Football Coach Brent Fackler described Heintz as a great person, a great athlete, an academic success and a young man with a great work ethic.
A part of the Golden Flashes' 2017 recruiting class, Heintz meant to study marketing and entrepreneurship.
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The first-year offensive lineman likely died as a result of the heat.. The offensive lineman was a member of the Golden Flashes' 2017 recruiting class and was on campus working out with his new teammates.
"What a great kid", a follow-up tweet said.
Heintz's passing was also reported by WKTN Radio in Kenton. Heintz and other student-athletes were reportedly cleared to begin practicing on June 11.
He was rushed to the hospital, where the Akron Beacon Journal reports the physicians worked on him for two hours "without success". The autopsy revealed that he had died of a cardiac arrhythmia, triggered by an abnormally large heart, according to ESPN.