gun close by. there was no evidence at all that any shots were fired during the course of this investigation. >> meantime, many people were just terrified on the streets of washington. here's the reporting of cnn affiliate wjla that witnessed the panic. >> what's happening? >> get in here. get in here now! >> it's chaos. >> what happened? >> someone has a gun. >> just all of a sudden you heard these three or four very loud pops and i mean loud. and they sounded like they were coming from almost where we're standing right now and you just heard people scream and they just started booking it. >> his mom was trying to pick him up off the ground as people are stepping on him. and like she can't get him because people are really stepping on this little boy. >> one of the cops said there