Covenant School

“We believe that there’s been some training of being able to shoot from a higher level, and her gunfire, from the video I’ve seen, she stood away from the glass so that she wouldn’t be an easy target to be shot,” Drake said.

Dozens of emergency vehicles — including marked and unmarked police cars, armored SWAT vehicles, fire trucks, ambulances and school buses — were seen descending on a neighboring business complex, which served as the first-responder staging area.

“I was hoping this day would never ever come in this city, but we would never wait to go in and make entry and to stop a threat, especially when it deals with our children,” Drake said during a news conference Monday.

“I was really impressed, with all that was going on, the danger, that somebody took control and said, ‘let’s go, let’s go, let’s go,” Drake said on Tuesday.

Police said Hale, who had no criminal record, left behind a written “manifesto,” which Drake said “indicates that there was going to be shootings at multiple locations; the school was one of them,” and had “quite a bit of writing” which is being reviewed by both MNPD and the FBI.

That manifesto, Drake told CBS News, included drawings of what Hale would wear and what types of guns would be used in the shooting.

Police also recovered “maps drawn of the school in detail — surveillance, entry points, etc.,” as well as a “sawed-off shotgun, a second shotgun and other evidence” from a Brightwood Avenue home connected to Hale just three miles from the scene of the “calculated and planned” “targeted attack.”