A high school football player died from heatstroke after collapsing during his team’s first training session of the season.
Drake Geiger, 16, slumped to the ground on the team's return to practice at Nebraska's Omaha South High School.
His body temperature reached a staggering 122 degrees, according to the boy's father Scott Hoffman.
Conditions at the time were just over 32C, around 91F.
But heat index was up between 100F and 106F - and the National Weather Service had issued a heat advisory for the area.
The teen is the fourth high school pupil in less than a month to die during sports practice or conditioning sessions across America.
The family had just returned from Las Vegas where the heat was extreme, his father explained.
"He was a big kid, but he was a healthy kid,” grieving Scott Hoffman said.
"He just didn’t pull through. They said his body temperature was extremely elevated and they couldn’t get it down."
Doctors told the dad his son died from heatstroke, but an autopsy has yet to take place.
He told station KMTV3: “There were 25 people working on him in a little room.
"We watched them work on him and do compressions for a good hour and a half, and he just didn't pull through.
"He didn't care if he was playing or on the side lines. He just wanted to be a part of the team and be around all the guys.
"He was just as a really good kid, I'm going to miss him."
The junior offensive and defensive tackle was looking forward to playing sport again as school returned.
His sister also spoke to the network and said her brother was one of a kind.
Brittany Hoffman said: "He always brought laughter to the room, always smiling.
"We're all sticking together, talking and supporting each other, talking about the memories that we have got."
Omaha South High School confirmed the student's death in a letter sent to parents on Wednesday.
“We have been in contact with Drake’s family and conveyed our heartfelt sympathy and support,” Principal Jodi Pesek wrote.
“Many in our community will be affected by this news. South High is a tight-knit community, and we are here for one another.”
Counsellors will also be made available to any of the teen's classmates who are struggling to come to terms with the devastating news.
