An ambiguous hint at worst. I could buy endangering, but not threatening.
The threat is ever present, but for the most part a little privacy is about all that's needed to keep most of the crazoids away.
Judges aren't the only folks with this problem ~ top level legal investigators, forensic laboratory specialists, various administrative law judges, and many other regulators with the power to write "final agency decision" put their lives on the line every day.
...Ambiguous at best...
Tell it to the judge. If you get indicted on federal charges, and he has only been arrested at this point, the odds are about 90% you will be convicted or cop a plea.