On Sunday, a peaceful Maine afternoon turned into a scene like something from an action movie, when gunfire erupted in a Walmart parking lot. According to Augusta police, the occupants of two vehicles parked alongside one another were arguing over money when they suddenly began exchanging a barrage of bullets. However, it wasn’t long before — as WGME reports — a pair of bystanders stepped in, ending the chaotic situation before it could turn into something far more tragic.