▁States , ▁was ▁ultimately ▁ins ur mount able . ▁Air fields ▁might ▁be ▁used ▁for ▁primary ▁as ▁well ▁as ▁for ▁advanced ▁training , ▁or ▁they ▁might ▁be ▁converted ▁from ▁one ▁type ▁to ▁the ▁other ▁as ▁weather ▁conditions ▁dict ated , ▁as ▁equipment ▁became ▁available , ▁or ▁as ▁demand ▁for ▁special ists ▁increased ▁or ▁decre ased . ▁ ▁By ▁the ▁end ▁of ▁May ▁ 1 9 1 8 , ▁a ▁bomb ing ▁school ▁was ▁located ▁at ▁Ell ington ▁Field ▁near ▁Houston ; ▁a ▁purs uit ▁school ▁at ▁Ger st ner ▁Field , ▁Lake ▁Charles , ▁Louisiana , ▁and ▁three ▁other ▁fields ▁to ▁be ▁converted ▁from ▁primary ▁to ▁purs uit ; ▁observer ▁schools ▁were ▁at ▁Lang ley ▁Field , ▁Virginia , ▁and ▁at ▁Post ▁Field , ▁Fort ▁S ill . ▁There ▁were ▁g unn ery ▁schools ▁at ▁Self ridge ▁Field , ▁M t . ▁C lem ens , ▁Michigan ; ▁at ▁Ell ington ▁Field ; ▁at ▁Tal ia fer ro ▁Field ▁No . ▁ 1 , ▁Fort ▁W orth , ▁Texas ; ▁and ▁at ▁Wil bur ▁Wright ▁Field , ▁Fair field , ▁Ohio , ▁which ▁also ▁served ▁as ▁an ▁arm or ers ' ▁and ▁instruct ors ' ▁school . ▁ ▁The ▁Training ▁Section ▁also ▁established ▁auxili ary ▁schools ▁at ▁Wil bur ▁Wright ▁Field ▁taught ▁arm or ers , ▁Bro oks ▁Field ▁and ▁Scott ▁Field ▁contained ▁the ▁principal ▁instruct or ' s ▁schools . ▁ ▁Radio ▁instruction ▁was ▁taught ▁at ▁Car neg ie ▁Te ch ▁University , ▁Pitts burgh , ▁ ▁Austin ▁University , ▁Texas ▁and