She had a job at a school as a lunchtime supervisor.

NEWYORKER: Friendly Fire

"You really have to sell them on the importance of pre-K and kindergarten: It's not what is used to be, " said John Crabbe, the Buffalo school district's attendance services supervisor.

WSJ: Districts find youngest students among most absent

The teacher and campus supervisor were described as heroes Thursday, when school personnel had coincidentally discussed earlier the campus lockdown process in case of an emergency, the interim superintendent said.

CNN: STORY HIGHLIGHTS

The teacher was joined by the campus supervisor -- a campus monitor on the school's staff -- and both of them persuaded the student to drop the shotgun, the sheriff said.

CNN: STORY HIGHLIGHTS

Kimble worked in the cafeteria of an elementary school one street over from the house and was a dedicated, caring employee, according to her supervisor there.

NPR: Officials: Man Shoots Daughter With 3 Kids In Home