Aleksei Oleinik has made six trips into the Octagon, with his most recent appearance at UFC 217 ending in a loss to Curtis Blaydes.

Fighting in a cage on the biggest stage is harrowing stuff.

However, it pales in comparison to what it feels like have your daughter stuck in the midst of a school shooting.

It turns out Oleinik’s kid was at Stoneman Douglas High School in Florida when a troubled 19-year-old entered the building and started firing with an assault rifle.

Here’s what the heavyweight had to say about it all, courtesy of a column written for ABC News.

However, nothing in 52 professional fights was as terrifying as a text I received on Valentine’s Day from my 16-year old daughter, Polina.

“Daddy, there is a shooting at my school.”

I read the text again just to make sure it was correct — it was. As the father of five kids, ages 2 to 16, I was consumed by thoughts of death and violence. My daughter is a student at Marjory Stoneman Douglas High School in Parkland, Florida, and was texting me from the mass shooting that would claim 17 lives and injure many more. Thankfully, Polina survived and was uninjured, but for several hours I struggled to retain the composure I have during fights. Her text reminded me that I am a father first, and a fighter second.

Definitely read the rest. And hug your loved ones.