Transcript for Newly released video shows moment San Antonio airport shooter opened fire
There is also newly released footage of the shooting at San Antonio airport. The gunman seen driving the wrong way and jumping from his car. Reporter: The just released video shows people running for their lives when a man jumped out of his car at the San Antonio airport and began a barrage of gunfire. Watch the top left of your screen. You can see the gunman driving the wrong way into the airport's dropoff area. A parked police officer in the yellow vest moving toward the gunman when he jumps out of the car and opens fire indiscriminately. Cars speeding away as the shooter empties his gun, only stopping to reload as calls to 911 pour in. They're at the airport. There's someone shooting. Reporter: The video then shows the officer taking cover behind a column, returning fire and hitting the gunman, identified as 46-year-old Joe Gomez. Gomez then taking his own life. Now, two months later, a motive for the shooting still hasn't been released, but local law enforcement say the suspect had a history of mental health issues. And authorities believe it's nothing short of a miracle that despite the number of rounds fired, no one else was injured. The officer who stopped this saved a lot of lives, because this guy had a full box of ammunition. Reporter: David, we're seeing this surveillance video tonight because of a new policy put in police in San Antonio earlier this year. It mandates the police department release video of so-called critical incidents like this within 60 days. David?
This transcript has been automatically generated and may not be 100% accurate.