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Mroczko was a military veteran and a student at Methodist University.
Curtis Harris of Benson is charged in Mroczko's death. The charge list includes felony death by motor vehicle, two felony counts of hit and run, and four misdemeanors including a DWI.
Troopers say it was dark and foggy early Sunday morning when Harris ran into the back of Mroczko's Harley Davidson, throwing him and his fiancée Stephanie Warn off the bike. Mroczko died instantly. Warn was flown to UNC where troopers say she is in a coma.
Mroczko's death sent shockwaves of grief through the nursing school where he just started in August after transitioning out of the military where he deployed several times.
Dr. Shannon Matthews was devastated when she got the news but said the students are taking the loss even harder.
"I mean they were so close. They were in classes all day together so they eat lunch together. They had lab together twice a week. They knew each other very well so this had been devastating," Matthews said.
Grief counselors will be available for students Wednesday. The University plans to honor Mroczko's memory with a candlelight vigil.
As for Harris, he's being held at the Harnett County Detention Center on a $300,000 bond.