or unabomb get point? -- get coined? >> the first two bombings were involved at universities northwestern university and rpi, the first bomb with a return address of northwestern. the second bomb in the graduate student room in may, 93 night at northwestern gave us universities as targets. at the time this bomb was placed on the american airlines flight, we have universities and airlines. the fbi likes to attach fancy names to its cases, and they certainly got the public attention. university and airlines bombing, unabomber. >> we had a chart behind us of all of the bombings. without getting into all of the details, what was the sequence of events after the first three? >> after the first three bombings, we would eventually have 13 more bombings, for a total of 16. in 1980, the airline aspect of this got another boost. percy wood, the president of united airlines in his lake forest, illinois home, received a package in the mail. but a week before he received the package, he received a letter, and the lette