i have that advantage. >> we learned there was a leak inside power paragon, a subsidiary of l-3 communications. most of their work is in electronics. the technology being leaks to china was navy destroyer information and submarine information. in the begin, we didn't know exactly who was the source of the leak at power paragon. we took a look at a number of factors. we look at travel. we look at access. after we sifted through all the information, it came down to one person. and it was chi mak. >> chi mak was born in china. he moved to the united states with his wife. he became an engineer in southern california in the 1980s. as an employee of power paragon. >> chi mak was a very good