▁Leb anon . ▁In ▁Season ▁ 6 ▁it ▁was ▁mentioned ▁that ▁he ▁served ▁in ▁the ▁G ulf ▁War ▁and ▁he ▁is ▁shown ▁we aring ▁the ▁South west ▁Asia ▁Service ▁Medal , ▁although ▁he ▁himself ▁has ▁never ▁spoken ▁of ▁the ▁deployment . ▁His ▁decor ations ▁include ▁the ▁Silver ▁Star , ▁Bron ze ▁Star , ▁Pur ple ▁Heart , ▁Navy ▁& ▁Marine ▁Corps ▁Comm end ation ▁Medal ▁and ▁Navy ▁& ▁Marine ▁Corps ▁Ach iev ement ▁Medal . ▁He ▁was ▁dis charg ed ▁in ▁March ▁ 1 9 9 2 ▁at ▁Camp ▁Le je une . ▁ ▁While ▁serving ▁in ▁Be ir ut ▁Mac ▁was ▁injured ▁in ▁the ▁ 1 9 8 3 ▁Be ir ut ▁bar ra cks ▁bomb ing , ▁from ▁which ▁he ▁still ▁be ars ▁a ▁scar ▁over ▁his ▁heart . ▁It ▁is ▁revealed ▁in ▁flash back s ▁that ▁he ▁had ▁tried ▁but ▁was ▁unable ▁to ▁save ▁a ▁young ▁Marine , ▁Corpor al ▁Stan ▁Whit ney , ▁who ▁was ▁fat ally ▁wounded ▁and ▁the ▁memory ▁still ▁occasionally ▁ha un ts ▁him , ▁as ▁seen ▁when ▁he ▁had ▁to ▁stabil ize ▁a ▁crit ically ▁injured ▁Don ▁F lack ▁after ▁an ▁explos ion ▁in ▁Season ▁ 2 . ▁ ▁Prior ▁to ▁his ▁father ' s ▁death , ▁Mac ▁had ▁considered ▁ret iring ▁from ▁the ▁Marine ▁Corps ▁to ▁" sett le ▁down " ▁and ▁received ▁a ▁job ▁offer ▁from ▁NY PD . ▁He ▁told ▁his ▁father ▁he ▁intended ▁to ▁turn ▁it ▁down ▁and ▁move ▁back ▁to ▁Chicago ▁to ▁be ▁near er ▁to ▁him ▁but ▁his ▁father