Greg Palkot reported the latest from Paris after the crash of EgyptAir flight MS804 in the Mediterranean Sea.
The Airbus was on its way from Paris to Cairo and officials believe terrorism was the likely cause of the crash.
Earlier, officials said wreckage had been located but they've since backed off that report.
Palkot noted that in December, 70 workers at Paris airports were fired due to suspected links to extremist groups.
Catherine Herridge reported earlier that French officials are exploring the possibility that Flight 804 was brought down in a similar fashion to the Russian passenger plane that was blown out of the sky over the Sinai Peninsula last year.
Herridge said they're looking into the Charles de Gaulle Airport workers who would have had access to the Airbus before it departed.
Moscow has said that the flight in October was brought down by an explosive device and a local branch of ISIS claimed responsibility for planting it.
French officials identified the 70 workers after the terror attacks in November.
The Telegraph reported:
Augustin de Romanet, chief executive officer of ADP, the company that runs the two Paris airports, said the state authority which issues security passes had carried out a screening after the attacks on Paris, in which 130 people were killed and 350 injured.
"Nearly 70 red badges were withdrawn after the attacks, mainly for cases of radicalisation," he said in an interview with French media.
He said around 85,000 people had secure-zone clearance in the two airports, most of them working for airlines or for several hundred subcontractors.
So-called red badges are issued to people employed in the secure zone of Roissy-Charles de Gaulle and Orly airports, working for instance as baggage handlers, aircraft cleaners and suppliers.