I say this from personal experience. Overcoming adversity makes you a stronger person in life.
I also know it isn't always easy. For example it's eerie how similar these two situations are. The guy here was also trying to get away from a car he had hit. And I'm unable to look at the video of the people on the ground, because it's too similar to what I saw outside my building.
If they reach out for assistance it will make dealing with it easier. But as with me if it happens again, it will always be a trigger to remember what happened.
I'm sure God is holding them close and will continue watching over them forever.