▁subs idi ary ▁of ▁R TS ▁Capital ▁Services . ▁The ▁company ▁launched ▁Net J ets , ▁a ▁program ▁that ▁introduced ▁a ▁' time - share ' ▁concept ▁of ▁fraction al ▁ownership ▁( as ▁previously ▁seen ▁in ▁resort ▁properties ) ▁to ▁business ▁j ets , ▁and ▁then ▁purchased ▁eight ▁C ess na ▁C itation ▁II s . ▁ ▁In ▁July ▁ 1 9 9 8 , ▁Warren ▁Buff ett ' s ▁Ber k shire ▁H ath away ▁Inc . ▁announced ▁that ▁it ▁was ▁bu ying ▁Net J ets ▁for ▁$ 7 2 5 ▁million ▁in ▁stock ▁and ▁c ash . ▁▁ ▁Buff ett ▁had ▁been ▁a ▁Net J ets ▁customer ▁since ▁ 1 9 9 5 . ▁Sant ul li ▁and ▁his ▁older ▁brother , ▁Vincent , ▁who ▁joined ▁Executive ▁Jet ▁in ▁ 1 9 9 6 ▁after ▁starting ▁and ▁taking ▁public ▁Port a ▁Systems ▁Cor p , ▁an ▁electron ics ▁company , ▁agreed ▁to ▁continue ▁to ▁run ▁the ▁business . ▁ ▁Sant ul li ▁stayed ▁on ▁as ▁chairman ▁and ▁CE O ▁until ▁his ▁res ignation ▁in ▁August , ▁ 2 0 0 9 . ▁ ▁He ▁remained ▁a ▁consult ant ▁for ▁the ▁company ▁through ▁August , ▁ 2 0 1 0 . ▁ ▁In ▁December ▁ 2 0 0 9 , ▁Sant ul li ▁joined ▁Lo an ▁Value ▁Group ▁as ▁chairman ▁of ▁the ▁board . ▁ ▁In ▁August ▁ 2 0 1 0 , ▁Sant ul li ▁launched ▁Mil estone ▁A viation ▁Group , ▁a ▁hel ic opter ▁and ▁business ▁jet ▁le asing