others. >> when the police and emt's arrived there was a second bomb with the intention of course to be to murder as many law enforcement people as possible. >> second and third bombs are classic techniques used by the irish republican army and middle east terrorist. this is the first time it's been used as a tactic in the united states. >> another explosion. the third major bombing in this city since last summer. >> over time there's more bombing that are similar to atlanta bombing. same materials, same detonation tactics, abortion clinics and gay night club. >> authorities asked for help locating this man, eric r. rudolph. investigators describe him as an outdoor type. >> he's identified as an anti-abortion terrorist who bombed the olympics because he wanted a stage to show his