as an employee of power paragon. >> chi mak was a very good electrical engineer. he was the go-to guy in power paragon. >> chi mak had extraordinary access and was highly placed at work. he was trusted by the u.s. government experts. he worked with them side by side. >> chi mak worked on some of the most sensitive navy technologies. technologies that would take the navy into the next century. >> we know he gave the chinese government information regarding the virginia class submarine, which is our newest sub. and ddx information, which is our newest destroyer. most advanced destroyer in the world. but most important thing we were worried about leaving power paragon was quiet electric drive which is a technology to quieting the acoustic signatures of navy ships and especially nuclear submarines. >> a submarine is of no value if the adversary knows where it's at.