lyn co , ▁named ▁for ▁the ▁county , ▁was ▁a ▁major ▁base ▁for ▁bl im ps ▁and ▁anti - sub marine ▁war fare ▁during ▁World ▁War ▁II . ▁The ▁Federal ▁Law ▁En for cement ▁Training ▁Center ▁( F LE TC ) ▁now ▁uses ▁a ▁substantial ▁part ▁of ▁the ▁former ▁NAS ▁as ▁its ▁main ▁campus . ▁ ▁Geography ▁ ▁According ▁to ▁the ▁U . S . ▁Census ▁Bureau , ▁the ▁county ▁has ▁a ▁total ▁area ▁of ▁, ▁of ▁which ▁ ▁is ▁land ▁and ▁ ▁( 2 8 . 3 %) ▁is ▁water . ▁ ▁The ▁majority ▁of ▁G lyn n ▁County ▁is ▁located ▁in ▁the ▁C umber land - St . ▁Sim ons ▁sub - bas in ▁of ▁the ▁St . ▁Mary s - S at illa ▁River ▁bas in . ▁Most ▁of ▁the ▁county ' s ▁northern ▁and ▁north western ▁border ▁area ▁is ▁located ▁in ▁the ▁Alt am aha ▁River ▁sub - bas in ▁of ▁the ▁bas in ▁by ▁the ▁same ▁name . ▁ ▁Major ▁high ways ▁▁▁ ▁Inter state ▁ 9 5 ▁▁ ▁U . S . ▁Route ▁ 1 7 ▁▁ ▁U . S . ▁Route ▁ 2 5 ▁▁ ▁U . S . ▁Route ▁ 8 2 ▁▁ ▁U . S . ▁Route ▁ 3 4 1 ▁▁ ▁State ▁Route ▁ 2 5 ▁▁ ▁State ▁Route ▁ 2 5 ▁Con ne ctor ▁▁ ▁State ▁Route ▁ 2 5 ▁Sp ur ▁▁ ▁State ▁Route ▁ 2 7 ▁▁ ▁State ▁Route ▁ 3 2 ▁▁ ▁State ▁Route ▁ 9 9 ▁▁ ▁State