One the porch is where Mattie Jefferson says she heard the unbelievable, and then saw the unimaginable.
Jefferson adds, "When I looked and saw that child laying in the street, and somebody running with a gun, I started crying for one thing."
With her head in her hands, Jefferson managed to call 911.
Jefferson adds, "Screaming because I knew the kid might have been dead and he was."
That kid was Monterius Rollins, 18.
Friends tell us he had been shot several times in the abdomen.
Corey Davis, Rollin's Friend, says, "It's just not like the old school days where you use your fist, people want to use guns and stuff now, they want to take lives. They can't be a real man."
No suspects are in custody.
Jefferson blames the wooded area.
She says it is a haven for criminals.
Jefferson adds, "Because they can do what they want to. They can hide up in here."
Friends tell us this really came out of nowhere.
Davis adds, "Shocking to hear."
They tell us Rollins was just visiting a friend on Arcadia Avenue when this happened in broad daylight.
Rollins was a former Tyner football player, and recently enrolled in Chattanooga State.
Davis adds, "He was just starting off his life, just the beginning."
Jefferson says she still traumatized by witnessing what she did, and still gets choked up.
Jefferson adds, "It could have been my child."
Davis says, "It hurts and I know how it feels. I looked into his mothers eyes and seen how she felt."
These friends are now making t-shirts that say Rest In Peace Monterius, all the while Jefferson says she feels like a prisoner in her own home.
Jefferson adds, "Can't sit under the car port, can't do anything."
Because the person, she says, she saw running with the gun, is not behind bars.
Jefferson adds, "I don't know who he was."
If you have any tips on this case, call Chattanooga Police.