▁Cambridge ▁Le ad ership ▁Associ ates . ▁ ▁Career ▁ ▁Mr . ▁He if etz ▁was ▁a ▁pri zew inner ▁in ▁both ▁the ▁Mer ri we ather - Post ▁Compet ition ▁in ▁Washington , ▁D . C . ▁and ▁The ▁International ▁T cha ik ov sky ▁Compet ition ▁in ▁Moscow . ▁After ▁the ▁latter ▁competition , ▁He if etz ▁don ated ▁his ▁prize ▁money ▁to ▁the ▁families ▁of ▁ja iled ▁diss idents ▁Alexander ▁G in zburg ▁and ▁Nat an ▁Sh char ans ky . ▁▁ ▁Richard ▁L . ▁Th orn burgh , ▁former ▁United ▁States ▁Att orney ▁General ▁and ▁Governor ▁of ▁Pennsylvania , ▁held ▁a ▁state ▁dinner ▁to ▁honor ▁the ▁gesture . ▁ ▁Te aching ▁and ▁Ad jud ic ation ▁ ▁Mr . ▁He if etz ▁has ▁served ▁as ▁professor ▁of ▁viol in ▁at ▁three ▁major ▁univers ities : ▁The ▁Pe ab ody ▁Institute ▁of ▁the ▁Joh ns ▁Hop kins ▁University , ▁Car neg ie ▁M ell on ▁University , ▁and ▁the ▁University ▁of ▁Maryland ▁College ▁Park . ▁In ▁addition ▁to ▁these ▁positions , ▁Mr . ▁He if etz ▁has ▁given ▁master ▁classes ▁all ▁over ▁the ▁world . ▁In ▁May ▁ 2 0 1 5 , ▁he ▁was ▁one ▁of ▁the ▁featured ▁Master class ▁present ers ▁at ▁the ▁Star ling - Delay ▁Vi olin ▁Sym pos ium ▁held ▁at ▁the ▁Ju illi ard ▁School ▁in ▁New ▁York . ▁ ▁In ▁August ▁and ▁September ▁ 2 0 1 6 , ▁Mr . ▁He if etz ▁served ▁on ▁the ▁j ury ▁of ▁the ▁first ▁Shang