The National Rifle Association Executive Vice President Wayne LaPierre speaks during a news conference in response to the Connecticut school shooting on Friday, Dec. 21, 2012, in Washington. The nation's largest gun-rights lobby is calling for armed police officers to be posted in every American school to stop the next killer "waiting in the wings." (AP Photo/ Evan Vucci)

Photo by: Evan Vucci

The National Rifle Association Executive Vice President Wayne LaPierre speaks during a news conference in response to the Connecticut school shooting on Friday, Dec. 21, 2012, in Washington. The nation's largest gun-rights lobby is calling for armed police officers to be posted in every American school to stop the next killer "waiting in the wings." (AP Photo/ Evan Vucci)