So did Hill go in intent on killing people?
Davis responded: "I believe there was something else, but I don't want to go into detail."
Some clues as to mindset are evident in the dramatic 911 call.
With Tuff acting as the intermediary, the suspect said "he should have just went to the mental hospital instead of doing this, because he's not on his medication," Hill says on the call.
The gunman, again via Tuff, insists he wants nothing to do with the school's students, "he wants the police."
The school worker then adds, "He said he don't care if he dies, he don't have nothing to live for."
Chief: It 'absolutely' could have been 'another Sandy Hook'
While Tuff seemingly kept her cool inside the school, outside a swarm of law enforcement was springing into action.
Police reacted "very, very quickly" -- including some officers who took up positions with long rifles -- "to engage the threat" and prepare for the worst, said Alexander.
"We can all make a reasonable assumption that he came there to do some harm," the police chief said, recalling last year's school massacre in Connecticut that ended with 20 students, six adults and gunman Adam Lanza dead. "He entered a school, an elementary school with children in it ... to do one of two things: Either to do harm to those children and/or any first-responders."
Thankfully, that didn't happen.
In fact, the suspect never went beyond the school's offices, and never near its classrooms. While he fired some rounds at police -- and one officer shot back at him -- no one was hit outside either.
And while there initially were fears that the suspect also had explosives, further tests indicated that was not the case: He came in with the rifle and a bag of ammunition but no explosives.
A day later, community members and leaders are offering praise for Tuff and police, as well as gratitude that the story did not turn tragic.
"Was the potential there to have another Sandy Hook?" admits Alexander, the police chief. "Absolutely."