‘He Seemed So Sweet': Orlando Shooter's Former Neighbor Shocked

A former neighbor of the Orlando nightclub shooter says she never noticed anything strange about Omar Mateen and that the woman who lived with him was “extremely nice.” Tricia Adorno recalled seeing Mateen every day in his security guard uniform, and one time he helped her work on her car. Adorno was shocked to learn Mateen was behind the deadliest mass shooting in U.S. history.