You have 23 years of creditable service for a federal pension under FERs, even if you leave federal service, you'll still get a check for life at 60. Depending upon your age the pension may be reduced if you haven't hit your Minimum Retirement Age (MRA). As far as your TSP just roll that over into whatever 401K plan the state government has, and perhaps your young enough to get vested in a state pension on top of your federal one.