How do I calculate my high three? I was a FERS employee from 1991-2000 then returned to FERS in 2022. I am 58 with a total of 23 years of credible FERS retirement because I did a military buy back of my active duty time (I retired from the Army Reserve). I know I will be giving up my SRS, but I plan to quit working after 24 months in July 2024. Is my high three calculated based on the last 24 months and the highest 12 months from my previous FERS time back in the 1990s? Thank you so much. - Rich https://zurl.co/Tdka