investigators quickly determined that gary wright has just become the latest victim of the unabomber, shadowy figure that has been engaged in a campaign of terror across the country for nine years. >> the case we called unabomb actually began in may of 1978 and continued until the last bomb was delivered in the u.s. mail in april of 1995. and during that time, the unabomber placed or mailed 16 devices. >> the first device explodes at northwestern university just north of chicago. disguised as an ordinary package, the bomb inflicts minor injuries on a university police officer. a year later northwestern is hit a second time. when another package detonates on campus, graduate student john g. harris sustains cuts on his arms and burns around his eyes. then on november 15th, 1979, a bomb is placed in the cargo hold of american airlines flight 444 heading from chicago to washington, d.c. in mid-flight it sets off a smoldering fire. 12 passengers suffer smoke inhalation. >> the pilots were able to land the plane at dulles shortly before they said to us later it probably would have burned th