Apparently they are investigating a second person too. (03-04) 18:22 PST WASHINGTON, (AP) -- Law enforcement officials say they've got one person in custody and are investigating whether a second was involved in a shooting at Pentagon subway entrance The officials spoke on condition of anonymity because the investigation is still unfolding. They say there's no immediate signs of terrorism but, with information coming in quickly, they haven't ruled anything out. Two police officers were shot and critically wounded in the shooting. http://www.sfgate.com/cgi-bin/article.cgi?f=/n/a/2010/03/04/national/w182216S73.DTL&type=politics