I do believe you are confounding the term "full pension" with "100%".
A "full pension" is the one the law provides for the number of years worked, the basis upon which the payment is computed, and other factors such as separate contributions (something available to federal employees ~ just pay in more and you get out something doggone close to T-bill interest rates ~ this, btw, used to be the federal pension system. Wasn't until Roosevelt that the federal government even had something like a recognizable retirement system for its workers.)
State and local government pensions have no relationship whatsoever with the federal government system.
“State and local government pensions have no relationship whatsoever with the federal government system. “
They do have one thing in common. They won’t be paid in the manner that you expect, as they are not affordable to the productive taxpayer.