The Maryland governor said when the Korean Air jet carrying the 500,000 tests flew into Baltimore/Washington International Thurgood Marshall Airport, it was met by National Guard troops and state police.

…Hogan, who is a Republican, said he had heard reports from other states of the federal government confiscating supplies. He specifically pointed to an incident in Massachusetts.

After 3 million masks purchased for the state were confiscated in New York, state leaders in Massachusetts turned to New England Patriots owner Robert Kraft to help bring in coveted N95 masks from China on a private plane.

….The governor added that the test protection was ongoing, saying that “the National Guard and state police are both guarding these tests at an undisclosed location.”

Maryland National Guard defending coronavirus tests at secret location – Business Insider

hmmmm