was stunned to see huge plumes of smoke. >> i saw a fire ball and then a giant cloud of smoke. >> you must be thinking to yourself, i just went through this on monday. >> yeah, i can't be doing this. what is it? is it another terrorist attack? is it a bomb? it was so massive. >> how old are you? >> 43. in 43 years, have you ever been near a bomb or an explosion before? it might have happened twice in three day sns. >> yeah. >> joe got back in his car. and, in a jitter ri voice, called his wife back at home. >> i said you'll never believe this. but i've seen another explosion