ROCHESTER, N.Y. (AP) — A company acted negligently in selling the weapon used in a Christmas Eve shooting that left two New York volunteer firefighters dead, a lawsuit filed Tuesday alleges. The semi-automatic rifle used by William Spengler Jr. on Dec. 24, 2012, during a pre-dawn ambush in which he killed two West Webster firefighters and wounded two others was purchased at a Gander Mountain store by his neighbor Dawn Nguyen. The Brady Center to Prevent Gun Violence says in the lawsuit filed on behalf of the four shooting victims that Gander Mountain should have realized Nguyen was making a "straw purchase" for Spengler.