adhered to his ethics pledge and agreement. it stated that there is absolutely no evidence of any impropriety or conflict of interest by deputy secretary bill linn in carrying out his duties at the pentagon. but how did this lobbyist get back to the pentagon? in washington, government watchdogs like steve ellis says it's all about those revolving doors. >> and certainly ret involthe r door is still spinning. >> william lynn's first government job was with senator ted kennedy. he was liaison to the senate services committee. six years later with democrat bill clinton in the white house, lynn moved to the pentagon, eventually becoming the undersecretary of defense in charge of the money. >> congratulations. >> in 2001, a power shift. and lynn was heading to the revolving door. >> early in the bush