Trump fired Andrew McCabe just 2 hours before midnight. If McCabe remained on after midnight, McCabe would receive his pension. At midnight Trump posted a tweet mocking him.
Just a reminder that Trump likes to let these things come down to the wire, and then BOOM.
You can't "lose" your pension, you just might not be able to draw early. Every FERS pension is guaranteed unless removed by legal means. If you have 6 years vested, you keep your pension.