1: Los Angeles ( CNN ) Even as major airports across the country clamp down on employee screening , a lone wolf could still potentially slip through security , a top airport official said . 2:  I agree that in any airport throughout the United States and here also , there is never a 100 % guarantee that somebody who wanted to do something illegal or wrong could n't make that happen ,  Gannon said . 3: Still , there 's never a 100 % guarantee of safety , airport official says .
1: a top airport official 2: Gannon 3: airport official