Sorry to hear about the knee injury! Hope you physical therapy can help that. It's hard to heal.
My son was briefly in Army basic training, but he was med-discharged for hip and knee joint issues from all the marching and physical exercise, etc. (mind you he's a former college football player -- not like he was weak, or anything -- but maybe the football injuries came back to haunt him).
I was puzzled by the sudden activity in the farewell thread until I saw you posting in threads, and figured you must be back. Good to see you back, though perhaps not under these circumstances!
Rensslaer