In a portion of a complaint filing obtained by The New York Times that has been submitted to the Office of the Special Counsel, the whistle-blower, described as a senior leader at the health agency, said the team was “improperly deployed” to two military bases in California to assist the processing of Americans who had been evacuated from coronavirus hot zones in China and elsewhere.

The staff members were sent to Travis Air Force Base and March Air Reserve Base and were ordered to enter quarantined areas, including a hangar where coronavirus evacuees were being received. They were not provided training in safety protocols until five days later, the person said.

Without proper training or equipment, some of the exposed staff members moved freely around and off the bases, with at least one person staying in a nearby hotel and leaving California on a commercial flight. Many were unaware of the need to test their temperature three times a day.