officer. and at that point i heard an unbelievable amount of police presence coming down our street. i counted about 40, 45 police officers coming down in their cars. i got out on the balcony to see what i could see and at which point i heard a very large explosion, a boom. i didn't see it. but as i looked up in the sky, i could see it lit up the entire sky around watertown. which led meme down an see what could. i started walking this direction and i could smell a distinct smell of gun powder in the air a. . >> once again, one suspect in the boston marathon bombings dead and a gunfight with police. the second suspect on the loose. a manhunt going on at this hour for the suspect and any potential explosives that he may or may not have scattered in the area. >> look at this picture one last time. the man in black the is the suspect that is dead and the man in the white cap is the suspect that is still on the loose.