PHOENIX (3TV/CBS 5) --Â More than 200,000 counterfeit surgical masks were seized in Phoenix over the last 45 days, some of them at Sky Harbor Airport. The masks were all intended for hospital workers and medical staff throughout the nation. Homeland Security and Border Patrol agents made the seizures. âHomeland Security Investigations and our partner agencies are committed to identify and seize these potentially hazardous medical products before they could harm our frontline workers,â said Scott Brown, Special Agent in Charge for Homeland Security Investigations in Phoenix. Back in October, federal officers assigned to Sky Harbor inspected an inbound, imported shipment and found it contained 3M N95 masks. One sample mask was removed from the shipment, and it was determined to be counterfeit.