As Olympic athletes arrive in Sochi, security remains a top concern... especially for the Austrian team.<br/> <br />Two members of their team recieved kidnap threats, triggering an investigation by counter-terrorism experts.<br/> <br />(SOUNDBITE) (English) AUSTRIAN IOC CHIEF PETER MENNEL SAYING:<br/> <br />"I talked to both athletes, one on the phone and one personally, before we left . She said I'm not afraid and I know we're in good hands with the NOC (National Olympic Committee).<br/> <br />It is unknown who made the threats, but it's the latest incident in ongoing security concerns.<br/> <br />A pair of suicide bombings in December in Volgograd increased safety worries.<br/> <br />A video later followed in which an Islamist militant group claimed responsibility and threatened more violence.<br/> <br />Back in the U.S., Matthew Olsen, director of the National Counterterrorism Center, told a House Intelligence Committee Sochi security is their number one priority.<br/> <br />(SOUNDBITE) (English) MATTHEW G. OLSEN, DIRECTO
