"Feb. 14, 2018 Seventeen people were killed when Nikolas Cruz, 19, opened fire at his former high school in Parkland, Fla., with a Smith & Wesson M&P semiautomatic rifle.... Dec. 2, 2015 Syed Rizwan Farook and Tashfeen Malik, husband and wife, killed 14 people at a holiday office party in San Bernardino, Calif. Four guns were recovered: a Smith & Wesson M&P assault rifle, a DPMS Panther Arms assault rifle, a Smith & Wesson handgun and a Llama handgun.... July 20, 2012 James E. Holmes, 24, killed 12 people and wounded 70 at a theater in Aurora, Colo., using a Smith & Wesson semiautomatic rifle, a Remington shotgun and a Glock .40-caliber semiautomatic pistol."