Numbers for next 10 years are not bad, but its not 2000 in the next 10 unless some leave early. Here are the numbers off the FDX MEC retirement calculator. First column is my projected number...not much use to OP. Second column is number hitting 65 in following 365 days... THAT is info I would use to plan, not crew bus or recurrent training statements. Advancement will come from either retirements, growth, or both.

12/21/2014 2779 2
12/21/2015 2694 85
12/21/2016 2592 102
12/21/2017 2455 137
12/21/2018 2297 158
12/21/2019 2178 119
12/21/2020 2008 170
12/21/2021 1820 188
12/21/2022 1627 193
12/21/2023 1431 196
12/21/2024 1247 184
12/21/2025 1063 184