Ok, now I'm not exactly a huge fan of the Nick Fury comics, but I do know that he started off with the Howling Commandos in WW2 and has survived all the way to the present day by the Infinity Formula, which keeps him physically young and healthy. One of his old friends from his WW2 days who serves with him in S.H.I.E.L.D. is Dum Dum Dugan. A story published in Marvel Preview #31 back in 1976 revealed that for decades Fury alone had been receiving the formula. Problem is though, with Marvel's sliding timeline in effect, Fury's S.H.I.E.L.D. days, even though they started being published in the 60s, supposedly began roughly a little over a decade ago as per current Marvel reckoning, so how could Dum Dum and the rest of Fury's pals from WW2 have survived such a long time and still be in relatively good health without using the formula?