Security video shows Seadorf leaving his home with his registered, 9 millimeter handgun toward an intersection where a silver car was stopped at a traffic light. Police said Alarick Williams was attacking the mother of his three children, forcing her into the vehicle, the television station reported. The children were in the back seat of the vehicle, police said.
"I was completely in shock that he started beating on her and forcing her in the car," Seadorf told WDAF.
Seadorf confronted Williams at the intersection, pointed his gun and ordered him to exit the vehicle and get on the ground, the television station reported.
“He put the car in park, and I knew he was going to start to comply and I wouldn’t have to go any further,” Seadorf said.
Williams was arrested and faces two charges of domestic assault, WDAF reported.