Not just one, but three good guys with guns

When a gunman started shooting in a Walmart outside Seattle on Sunday, he found himself confronted and pursued by two armed civilians before being shot dead by a third.

Via CBS News:

Witness Megan Chadwick told KIRO-TV her husband saw an armed civilian take down the shooter. "He said he watched him (the shooter) take his last breath," Chadwick said. "There were three civilians going after him to shoot him and two of them had their guns up and then the third guy shot him through the window of the car.