"60 Minutes" host Scott Pelley announced the network had obtained a letter indicating the whistleblower is under protection because they fear for their safety.
The letter from the whistleblower's lawyer, Andrew Bakaj, Compass Rose LLC, indicates that the office of the Director of National Intelligence (ODNI) has activated "appropriate resources" to protect them.
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It doesn't surprise me a bit. Trump implied he should be executed a few days ago. And we know there is no such thing as a crime the Trump Syndicate isn't willing to commit.
BTW When Trump threatened the guy he just put himself on the hook for witness intimidation and witness tampering to add to his growing list of crimes.