WASHINGTON, D.C. -

A few weeks before a 15-year-old boy stowed away in the wheel well of a flight from California to Hawaii, the Transportation Security Administration conducted a review of San Jose's airport and found its perimeter to be in compliance with the agency's security requirements.

Now, Democratic Sen. Barbara Boxer of California is questioning the thoroughness of the TSA's nearly three-month review given that the boy said he hopped a fence to get to the flight. Boxer made the case in a Senate hearing Wednesday that if a 15-year-old could get through security barriers, others could, too.

TSA Administrator John Pistole told Boxer that the agency's review indicates the airport has the proper security systems in place, but it's not a guarantee that nothing bad will ever happen.