▁provided ▁by ▁a ▁former ▁naval ▁captain ▁c ash ier ed ▁for ▁alleg ed ▁cor ruption , ▁showed ▁two ▁prominent ▁polit icians ▁from ▁Ban zer ' s ▁National ist ▁Democratic ▁Action ▁( A cción ▁Democr ática ▁Nacional ista — AD N ) ▁and ▁military ▁figures ▁frat ern izing ▁with ▁Su á rez . ▁ ▁The ▁Um op ar ▁in ▁particular ▁had ▁earned ▁a ▁reputation ▁for ▁cor ruption , ▁especially ▁in ▁the ▁Chap are ▁region . ▁In ▁ 1 9 8 7 , ▁according ▁to ▁Department ▁of ▁State ▁and ▁con gression al ▁staff , ▁drug ▁tra ff ick ers ▁were ▁offering ▁Um op ar ▁officers ▁and ▁town ▁officials ▁in ▁the ▁Chap are ▁region ▁amounts ▁r anging ▁from ▁US $ 1 5 , 0 0 0 ▁to ▁US $ 2 5 , 0 0 0 ▁for ▁sevent yt wo ▁hours ▁of ▁" prote ction " ▁in ▁order ▁to ▁allow ▁aircraft ▁to ▁load ▁and ▁take ▁off ▁from ▁c land est ine ▁a irst ri ps . ▁In ▁February ▁ 1 9 8 8 , ▁the ▁deput y ▁minister ▁of ▁national ▁defense ▁announced ▁that ▁about ▁ 9 0 ▁percent ▁of ▁Um op ar ▁members , ▁including ▁twelve ▁middle - ▁and ▁high - ran king ▁officers , ▁had ▁been ▁dismiss ed ▁for ▁alleg ed ▁links ▁to ▁drug ▁tra ff ick ing . ▁The ▁La ▁Paz ▁newspaper ▁Pres encia ▁reported ▁in ▁March ▁ 1 9 8 8 ▁that ▁Um op ar ▁chief s , ▁including ▁the ▁pro sec utors , ▁were ▁working ▁with ▁n arc ot ics ▁tra ff ick