Elon Musk is vowing yet again to fire any federal workers who don’t respond to an email asking them to list five things they accomplished last week.

Many federal employees across the country are back at agency offices under President Donald Trump's return-to-office mandate

Musk’s unusual demand has faced resistance from several key U.S. agencies led by the president’s loyalists — including the FBI, State Department, Homeland Security and the Pentagon — which instructed their employees over the weekend not to comply.