Eligibility | Midpage842.201Purpose.842.202Definitions.842.203General eligibility requirement.842.204Immediate voluntary retirement—basic age and service requirements.842.206Involuntary retirement.842.207Air traffic controllers.842.208Firefighters, customs and border protection officers, law enforcement officers, members of the Capitol or Supreme Court Police, and nuclear materials couriers.842.209Members of Congress.842.210Military reserve technicians.842.211Senior Executive Service, Defense Intelligence Senior Executive Service, and Senior Cryptologic Executive Service.842.212Deferred retirement.842.213Voluntary early retirement-substantial delayering, reorganization, reduction in force, transfer of function, or other workforce restructuring.