A teenage girl is facing jail time after she shot at a friend wearing a bulletproof vest—and missed.

Police say 18-year-old Taylor Ann Kelly could spend up to five years in jail after she fatally shot 26-year-old Blake Wardell, who apparently asked her to help him test out a new Kevlar vest.

Police say they had been hanging out with friends in a garage when Wardell came up with the ill-fated plan to have Kelly shoot at him with a small-caliber weapon.

According to FOX, Wardell bled to death when the bullet struck him in an unprotected chest area of the vest. Other friends present at the scene apparently tried to give him CPR to no avail and medical workers were unable to revive him.

A deputy coroner told reporters that there did not appear to be excessive alcohol or drug abuse involved in the shooting.

Kelly faces up to five years in jail for involuntary manslaughter.