More than a decade after some flight schools unknowingly trained terrorists, could it be happening again?

FOX News Radio's Lisa Brady has more in our on-going series on national security:

Securing America.

A security loophole revealed at a House hearing.

Rogers: "Isn't it true that based on your report, the Transportation Security Administration cannot assure the American people that foreign terrorists are not in this country learning how to fly airplanes, yes or no?"

Lord: "At this time, uh... At this time, no."

That exchange between Alabama Republican Congressman Mike Rogers and Stephen Lord of the Government Accountability Office, which in part cites database discrepancies between the TSA and FAA. And since added security focuses on foreign nationals, someone on a no-fly list could still go to flight school if they're a U.S. citizen. The TSA says the report left out some of the vetting process, but that the issues will be addressed.

Lisa Brady, FOX News Radio.