reception from congressional lawmakers both sides of the aisle during explosive hearing today. but, first, china s very bad intentions for the u.s. via hacking. the head of the fbi sounding a serious alarm tonight. correspondent david spunt has details. good evening, david. bret, good evening. fbi director christopher wray chooses his words carefully and his words today sobering. china s hackers are positioning on american infrastructure in preparation to wreak havoc and cause real world harm to american citizens and communities. wray warned lawmakers during a hearing on cybersecurity and china s aggression. he says chinese hackers outnumber u.s. cyber personnel at least 50 to 1. u.s. intelligence agencies identified hundreds of routers that have been taken over by a china-backed hacking program called volt typhoon. the program injected malware into u.s. sectors like energy communications and water treatment. china s intent? to destroy or degrade the civilian critical