The Austin American-Statesman newspaper published edited portions of surveillance video Tuesday showing officers retreating from gunfire in the hallway of Robb Elementary School in Uvalde, Texas, during the fatal shooting in May.
The edited video is just over four minutes long and first shows teachers screaming as the gunman crosses the parking lot of Robb Elementary School after crashing his car just outside the property.
Once the gunman is inside the building, surveillance cameras show him walking down the hallway unopposed with a semi-automatic rifle.
Images can be disturbing.