al qaeda group isis battling forces 37 miles from the capital, the pentagon acknowledged the enemy does possess some american supplied military hardware but not a particular kind of missile system as had been reported. >> we don't have a perfect inventory of that. the iraqi government is investigating all of that. i've seen no firm indications they're in possession of that particular system. >> reporter: officials provided some detail about the 75 u.s. troops president obama citing the war showers resolution, notified congress late monday he was deploying to iraq, roughly 160 are to help with embassy security and roughly another 100 forward stationed outside of ira iraq. >> one of the things this group does and is proficient at is airport management and security. >> reporter: on the sidelines of iranian nuclear talks in geneva, speaking briefly to diplomats about the crisis in iraq but did