It's hard to believe it's almost been a year since the deadly shooting at Sandy Hook Elementary in Newtown Connecticut.  The 911 calls have been released, giving us a look into the terrifying first moments at the school.

Teachers and staff are heard pleading for help, describing gunshots being heard inside the building, on the morning of December 14th.

Twenty six children and six adults were killed by Adam Lanza before he turned the gun on his mother and himself.

Newtown Shooting 911 Calls

NEXT: Andy Griggs Writes '20 Little Angels' For Sandy Hook

EXCLUSIVE: Andy Griggs Talks '20 Little Angels' For Sandy Hook [AUDIO]

MORE: Sandy Hook Students Sing 'Somewhere Over the Rainbow'

Sandy Hook Students Record 'Somewhere Over the Rainbow' Benefit Song