▁active . ▁Note ▁that ▁many ▁squad rons ▁were ▁designated ▁as ▁both ▁V A ▁and ▁V F ▁squad rons ▁at ▁different ▁times ▁during ▁their ▁existence . ▁This ▁list ▁includes ▁all ▁" VA " ▁design ations ▁which ▁have ▁been ▁used ▁by ▁US ▁Navy ▁aircraft ▁squad rons ▁except ▁for ▁those ▁assigned ▁to ▁US NR ▁squad rons ▁which ▁existed ▁before ▁ 1 9 7 0 ▁unless ▁they ▁were ▁activ ated , ▁in ▁which ▁case ▁they ▁are ▁included . ▁ ▁Note : ▁The ▁parent het ical ▁( first ▁use ), ▁( second ▁use ), ▁( 1 st ), ▁( 2 nd ), ▁( 3 rd ) ▁etc ... ▁app ended ▁to ▁some ▁design ations ▁in ▁the ▁table ▁below ▁are ▁not ▁a ▁part ▁of ▁the ▁squad ron ▁design ation ▁system . ▁They ▁are ▁added ▁to ▁indicate ▁that ▁the ▁design ation ▁was ▁used ▁more ▁than ▁once ▁during ▁the ▁history ▁of ▁U . S . ▁Naval ▁A viation ▁and ▁which ▁use ▁of ▁the ▁design ation ▁is ▁indicated . ▁Abs ence ▁indicates ▁that ▁the ▁design ation ▁was ▁used ▁only ▁once . ▁ ▁V AK : ▁Dis est ab lished ▁T act ical ▁Aer ial ▁Ref uel ing ▁squad rons ▁The ▁V AK ▁design ation ▁was ▁established ▁in ▁ 1 9 7 9 . ▁It ▁was ▁only ▁applied ▁to ▁two ▁US NR ▁squad rons ▁then ▁designated ▁as ▁V A Q ▁squad rons ▁but ▁which ▁performed ▁tank ing ▁as ▁their ▁primary ▁mission . ▁It ▁was ▁dis cont in ued ▁in ▁ 1 9 8 9 ▁with ▁the ▁dis est ab lish ment ▁of ▁the