▁Ro ▁Kh anna ▁sent ▁a ▁letter ▁to ▁the ▁Department ▁of ▁Def ense ▁Ins pect or ▁General ▁describing ▁reports ▁of ▁" w aste , ▁fra ud , ▁and ▁ab use " ▁by ▁Trans Dig m ▁Group ▁and ▁calling ▁for ▁an ▁investigation . ▁He ▁wrote ▁that ▁Trans Dig m ▁was ▁able ▁to ▁operate ▁as ▁a ▁" hidden ▁mon opol y " ▁because ▁its ▁subs idi aries ▁failed ▁to ▁report ▁their ▁common ▁corpor ate ▁ownership ▁on ▁fil ings ▁with ▁the ▁Department ▁of ▁Def ense ▁( Do D ). ▁This ▁om ission ▁allowed ▁Trans Dig m ▁to ▁avoid ▁the ▁requirement ▁that ▁mon opol y ▁supp liers ▁to ▁Do D ▁report ▁their ▁costs . ▁The ▁letter ▁also ▁c ited ▁several ▁large ▁price ▁increases ▁that ▁occurred ▁after ▁the ▁supp liers ▁had ▁been ▁acquired ▁by ▁Trans Dig m . ▁For ▁example , ▁a ▁cable ▁assembly ▁increased ▁in ▁price ▁from ▁$ 1 7 3 7 ▁to ▁$ 7 8 6 3 . ▁Rep . ▁Kh anna ' s ▁letter ▁asked ▁the ▁Do D ▁Ins pect or ▁General ▁to ▁investigate ▁( 1 ) ▁Trans Dig m ▁price ▁increases ▁bor ne ▁by ▁Do D ▁and ▁whether ▁performance ▁improvements ▁were ▁behind ▁the ▁increases , ▁( 2 ) ▁how ▁proc ure ment ▁officers ▁would ▁have ▁treated ▁Trans Dig m ▁differently ▁had ▁their ▁fil ings ▁been ▁accurate , ▁( 3 ) ▁how ▁to ▁lower ▁short - term ▁costs ▁to ▁Do D ▁of ▁proc ure ment ▁from ▁Trans Dig m ▁subs idi aries . ▁ ▁Price - g oug ing ▁accus ations ▁ ▁From ▁ 2 0