Senator Bill Nelson of Florida stated that gunman who killed 17 people at a high school on Valentine's Day came heavily prepared.<br />Sen. Nelson was briefed by law enforcement officials after the shooting at Marjory Stoneman Douglas High School in Parkland.<br />He stated that the shooter wore a gas mask, and was equipped with smoke grenades as a part of his heinous act.<br />Sen. Nelson added it is believed that the shooter intentionally set off the fire alarm to coax people out of their classrooms. <br />
