Tim McGraw rarely shares photographs of his half brother Mark but when he did it triggered a massive reaction from fans.
Fans were left fearing for the safety of Mark when the music legend posted an emotional tribute to him to mark a major milestone on Instagram.
DON'T MISS: Tim McGraw and Faith Hill's daughter Audrey dresses up as Cher for theme night
DON'T MISS: Tim McGraw and Faith Hill's daughter Gracie unveils unforeseen family makeover
At the time, the 1883 star shared his pride after Mark successfully graduated from the Philadelphia Fire Academy in July last year. With the post, he shared a photo of him posing in a blue uniform with a huge smile on his face.
WATCH: Tim McGraw and Faith Hill's love story
Captioning the photo, Tim wrote: "Congrats to my brother Mark and the entire 199th Cadet Class on graduating from the Philly Fire Academy! Good luck, be safe, and enjoy the celebration."
Fans were quick to echo Tim's sentiment and also urged the new firefighter to "stay safe" in his potentially dangerous job. "Congratulations Mark; stay safe and thank you for your service!" replied one. A second said: "Congratulations Mark! Be safe and careful when u go on a call."
A third added: "Be safe. Philly will keep you on your toes for sure! I'm a Philly girl & it's crazy here."
Tim shared his pride over Mark becoming a firefighter
Alongside Mark, Tim also has another half-brother, Matthew, and a half-sister, Cari, through his father, former New York Mets and Philadelphia Phillies baseball player, Tug McGraw.
Tim, who was raised by his step-dad, Horace Smith, only discovered Tug was his father when he accidentally stumbled upon his birth certificate when he was 11 years old. Tim and Tug had a complicated relationship. They first met a few months after Tim's discovery, but then had no contact with each other until Tim was 18.
© Photo: Getty ImagesTim and Mark's dad was a professional baseball player
But Tim admitted he never had any hard feelings towards Tug because learning his dad was a star athlete gave him something to reach for. "It changed what I thought I could do with my life coming from the circumstances I came from," he explained on Today in 2019.
"I felt like when I found that out, you know, he's a professional baseball player who's successful, to me, it made me think that blood is in my veins, so that ability is in there."
Tim and Tug managed to form a close bond despite the circumstances in which they met; however, it was cut short when Tug sadly died of brain cancer in 2004 aged just 59.
Read more HELLO! US stories here
Like this story? Sign up to our HELLO! Mail newsletter to get other stories like this delivered straight to your inbox.
