State authorities have cast Arredondo as the on-scene commander and said his errors delayed police killing the gunman. Arredondo, however, has told the Texas Tribune he didn't consider himself to be in charge of operations and that he assumed someone else had taken control of the law enforcement response. He did not have a police radio at the time.
The roles of the ranking on-scene officers from other agencies, including the Texas Department of Public Safety, remain unclear. McLaughlin has accused DPS of minimizing its involvement in the response and releasing inaccurate timelines.
Last week, a critique of the police response written by tactical experts and requested by DPS alleged that a Uvalde police officer had a chance to open fire on the gunman before he entered the school. McLaughlin has said that account was inaccurate.
"All they keep doing is piling missed facts on missed facts, and throwing it out there and see what sticks," McLaughlin said.
In a statement, DPS Director Steve McCraw said the video provides "horrifying evidence" that the law enforcement response was a failure.