These 20 years and back people (Randy and Tony ) report at the end of their service they are given pills and put into a machine that reduces their age. I have heard of this several years ago and couldn't really believe it.
Here is a story that the military in the US is admitting they have a kind of anti aging pill they plan to test.
Once the military says it is going to test something that means it has been around for decades and its going to become available to the public.
https://breakingdefense.com/2021/06/socom-to-test-anti-aging-pill-next-year/