▁dis est ab lished ▁squad rons ; ▁it ▁lists ▁squad ron ▁design ations ▁which ▁are ▁no ▁longer ▁in ▁use . ▁Some ▁of ▁the ▁squad ron ▁design ations ▁in ▁the ▁table ▁belonged ▁to ▁squad rons ▁which ▁have ▁been ▁dis est ab lished ▁but ▁some ▁belonged ▁to ▁squad rons ▁which ▁have ▁been ▁de activ ated ▁and ▁still ▁exist ▁in ▁an ▁in active ▁status . ▁ ▁Note : ▁The ▁parent het ical ▁( 1 st ), ▁( 2 nd ), ▁( 3 rd ) ▁etc ... ▁app ended ▁to ▁design ations ▁in ▁the ▁tables ▁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 AP : ▁Dis est ab lished ▁He avy ▁Phot ographic ▁Re con na issance ▁squad rons ▁In ▁ 1 9 5 2 , ▁two ▁reconna issance ▁squad rons ▁were ▁established ▁and ▁designated ▁" Ph ot ographic ▁Squadron ▁( V J )" ▁( note : ▁the ▁V J ▁design ation , ▁at ▁the ▁same ▁time ▁also ▁designated ▁" We ather ▁Squadron " ▁or ▁" We ather ▁Re con na issance ▁Squadron "). ▁In ▁ 1 9 5 6 ▁the ▁Phot ographic ▁Squad rons ▁( V J ) ▁were ▁red es ign ated ▁to ▁" He avy ▁Phot ographic ▁Re con na