china about his progress. this was frosting on the cake for us. we didn't realize they would have surveillance personnel watching their own people for signs of compromise. and it also confirmed the importance of this delivery to china that they'd have somebody watching it. >> at the airport, we searched the bag of tai and fuk li, his wife. in the piece of luggage, they had a small book titled "how to speak american english." in it they had two out of three cds. and they are the type of discs, you'd learn to speak english. put it in your computer, spit out words, talk back to it. instead of having the third disc, they had the disc they copied and encrypted. pretty ingenious. any inspector would open the book up, look at it quickly, see the two discs and move ahead. >> when tai mak and fuk li entered through security at the