[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2010/US/03/08/pentagon.officers.shooting/story.pentagon.police.cnn.jpg caption="Officers Marvin Carraway, from left, Colin Richards and Jeffrey Amos recall Thursday's shooting at the Pentagon."] (CNN) – Pentagon security officer Marvin L. Carraway Jr. saw the man walking toward him. A split second later, he saw the man's gun. "When I looked at the shooter, he looked at me and I … Continue reading Pentagon security officer knew 'something's about to happen'