A North Texas man is being heralded a hero after police said he held a man at gunpoint who was assaulting a woman. The tense standoff broke out on Friday near the intersection of Carroll Avenue and Southlake Boulevard. Witnesses reported seeing a man standing in the middle of the street pointing a gun straight at the passenger of a red vehicle with the door open. “We expected crowds and long return lines, but we never expected to see that,” said Lindsey Bryant, who witnessed scene. Bryant was traveling as a passenger in the car with her mother and daughter. Her sister Mistina Doland was next to her behind the wheel. “It was intense not knowing whether bullets were going to start flying from either side of the street,” said Doland. Seconds after the sisters dialed 911, police rolled up on the scene. Investigators sorted out the situation and determined the man with the gun was actually trying to help. Chief Steve Mylett with the Southlake Police Department said the man had just witnessed the driver of the red vehicle hitting his female passenger. Police arrested MacMichael Nwaiwu, 28, who is now in jail. “It’s amazing that in this day in age that people are willing to reach out and help,” said Doland.