Along with the ex-military guys who came to FedEx (and UPS, and every other airline) after their military career, we have other guys who came here from other occupations, and who are trying to either get a high 5 (years of pay) for retirement, or to increase their years of service. The other way to maximize retirement pay is to get the number of years up. If a guy turns 60 with (say) 12 years of FedEx service, his retirement pay is 24% of the average of his highest 5 years. If he goes to the back seat for (say) 3 years, his retirement pay would be 30%. In other words, he gets an additional 2% for each year he stays on.... up to 25 years or 50% of his high 5.

I didn't forget #101 - Greed. There's probably that too. Or #102 - The "I'm gonna stay right here until they have to bury me, because I died in the seat." Or #103, The "I'm staying here to screw someone else out of a seniority number." I agree, it takes all kinds, but it's not for you to tell someone to leave, because you don't know why they're staying in the first place. As well, all you've earned the right to do is ***** about it.