The retirement after becoming an FBI agent?

FBI Special Agents may receive the full FERS Basic Benefit if they retire at age 50 with 20 years of federal law enforcement officer service, or at any age with 25 years of such service. The annual FERS Basic Benefit for retiring Special Agents is 1.7 percent of the "high-3 average salary" (the average annual salary earned during the 36 consecutive months of federal employment that would produce the highest average), multiplied by 20 (representing the first 20 years of creditable service), plus one percent of the "high-3" times the number of remaining years of service. The annual pension is increased each year by a "cost-of-living adjustment" (or COLA), reflecting the bulk of the annual change in the cost of living measured by the Consumer Price Index.