Gunman, 18, wounds classmate at Arapahoe High School

Parker Semin, a 2011 Arapahoe High School graduate, prays at a makeshift memorial bearing the name of wounded student Claire Davis, who was shot by a classmate during school three days earlier in an attack, in front of Arapahoe High School in Centennial, Colo., Monday, Dec. 16, 2013. Semin said he came by to pray for the "speedy recovery" of Davis, age 17, who was shot in the head at close range with a shotgun, and remains in a coma. (AP Photo/Brennan Linsley)
Parker Semin, a 2011 Arapahoe High School graduate, prays at a makeshift memorial bearing the name of wounded student Claire Davis, who was shot by a classmate during school three days earlier in an attack, in front of Arapahoe High School in Centennial, Colo., Monday, Dec. 16, 2013. Semin said he came by to pray for the "speedy recovery" of Davis, age 17, who was shot in the head at close range with a shotgun, and remains in a coma. (AP Photo/Brennan Linsley)