Your choices for retiring with pension benefits include:
Normal Retirement: at or after age 65 or after, with at least five years of credited service
Early Retirement: at age 60 with at least five years of credited service
30-year Early Retirement: beginning at age 55 with 30 years of credited service
Disability Retirement for total disability
Mandatory Retirement at age 72: required by Title III, Canon 16, Section 5