New details raise questions about efforts to prevent Georgia shooting [Video]

“I’m sorry, mom.”Those were the words Colt Gray texted his mother Wednesday morning before the deadliest school shooting in the United States so far this year erupted at Apalachee High School in Winder, Georgia.That text was enough to spur a call from Marcee Gray to her son’s school to warn about an unspecified “extreme emergency.” Marcee Gray spoke to a school counselor for about 10 minutes, Charles Polhamus, her father, told CNN.The call was at 9:50 a.m. that morning. Thirty minutes later, police were responding to an active shooting at the school.The text and call were two signs that foretold the chaos and violence to come, as the teenager used an assault-style rifle to kill four people – two teachers and two students – before surrendering to police. Seven others were wounded and two more suffered other injuries, according to authorities.Barrow County Sheriff Jud Smith has told CNN there were …