The Carson City gunman who killed five people, including three National Guardsmen and himself, at an IHOP Tuesday had a “Support Our Troops” sticker on his car. Eduardo Sencion, 32, worked at his family’s market in South Lake Tahoe with no prior criminal record—not even a traffic ticket. He was born in Mexico but had become a U.S. citizen, according to the Reno Gazette Journal. He also had no military training and did not appear to be purposefully targeting members of the military. Sencion’s family says he had “mental issues” but declined to elaborate.