(NBC) — The NRA-backed National School Shield program on Tuesday unveiled recommendations to protect schools from instances of violence, including a model program to train and enable school personnel to carry firearms.

Asa Hutchinson, a former Republican congressman and former head of the Drug Enforcement Agency, outlined recommendations he said would enhance school security. Hutchinson was tasked by the National Rifle Association following the December shooting at an elementary school in Newtown, Conn. to develop the recommendations to bolster school security.

Note: Read our discussion guidelines before commenting.