Crozet Harris Teeter shooting: a hero saved lives by stopping a shooter, but could it have been prevented?

Police say they'll be conducting a review of their prior contact with the would-be shooter in January.

Witnesses recall shooting at Crozet Harris Teeter. CBS19 news. Watch.

Those who knew Justin Barbour described him as a kind person.

“Anyone who truly knew him would tell just how genuinely good of a person he was,” wrote his sister, Tekaiya Barbour, in a Facebook post. “He was a reliable friend, a cousin, nephew, grandson, brother, and most importantly son. Nobody would tell you a bad story about him, because that is the person that he was!!”

"I wouldn't even put him in the top 50th percentile of people who could have done that,” a Western Albemarle High School classmate of Barbour’s told the Daily Progress. “Something must have gone seriously wrong."

Indeed, something went about as wrong as it can go.

At around 1:30 pm on February 17 Justin Barbour parked his vehicle near the Harris Teeter grocery store in Crozet and walked over to the parking lot carrying a l…