NEW : Multi-National Force-Iraq source : Random small-arms fire did n't pose danger . `` We were shot at by three rockets , '' Sen. James Inhofe says . Plane carrying Five senators , a congressman takes evasive measures . Five suspected insurgents killed , three detained , Salaheddin province city military says .
NEW : Pentagon source : Random small-arms fire did n't pose danger . `` We were shot at by three rockets , '' Sen. Richard Shelby says . Plane carrying three senators , a congressman takes evasive measures . Five suspected insurgents killed , 13 detained , U.S. military says .