Yeah, I double careered a bunch in the 70's, 80's & 90's. When I came home from "that place" I was just short of being 20 (I went at 17, birthdays 18 & 19 were fun) and because of all the "garbage" going on in 1971, I opted to become a reservist instead of 20 years active, so almost immediately after turning 21 in '72, I went into law enforcement and continued serving in the Marines and later in the Army Reserve & National Guard until my "Grey" retirement in 1997 (my PD retirement was official in '85). I didn't get my "blank check" back until 2011 when I turned 60 and entered full 100% retired status (of course after a short call-up in 2007....scary). So I double careered basically from 1972 onwards. Today I kinda eat ok, but I can't walk that well at times, can't hear, and forget picking up something really heavy (used to bench 300+ & them days are gone)