A tractor trailer hit my vehicle from behind/driver side rear in snowy road conditions and then jackknifed causing my vehicle to spin out of control across the interstate. My 2 children were in the backseat, my [XXX] son driver side rear & [XXX] daughter passenger rear. My husband was in front passenger seat. No air bags deployed, the vehicle was a total loss, we almost got killed. The impact was mainly on the driver side rear where the initial impact happened & my sons seat was pushed up & completely detached from the rest of the vehicle and yet his SRS Side Airbag never deployed. Please see images below of the air bags not deploying . If that tractor trailer hit us 2 inches different, my son would be dead right now. There were injuries and we were seen by EMS on scene & then the hospital later. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)