harryiputtogetherateamofwomenfromthecomputingdivisionhereatkennedyandwehavespentmostofthelasteighteenmonthscombingthroughmissionfilesandcomputerprintoutslookingformorecluestothesourceoftheoxygentankexplosiononboardapolloxiiiandithinkwehavefinallyworkedoutwhathappenedthetankcontainingthesourceoftheexplosionwasoriginallyinstalledinapolloxbutremovedformodificationduringthatprocessitgotdroppedsoitwasheldbackforfurthertestsandareplacementfittedforthatflightonceithadpassedinspectionthetankwasreturnedtoserviceandearmarkedforodysseyfurtherupgradeswerecarriedouttoallowittorunoffgroundpowerduringfitoutattwicethespaceshipvoltageandthehigherpowerwasusedtoboiloffexcessoxygenduringgroundtestsunfortunatelyitlookslikethethermostaticswitchesinthetankwereoverlookedduringthevoltageupgradeandourbestguessisthattheyfusedclosedduringtheboiloffallowingthetemperaturetorisetooverathousanddegreesyoumightthinkthetestengineerswouldhavenoticedthatbutsincethetankoperatingtemperaturewassupposedtobesomewherewellbelowzerothedialonlywentasfaraspluseightysonoonewouldhavenoticedoperatingthatfaroutofnormalrangeitisamiraclethetanklastedaslongasitdidandthataddstotheimpressionthatthiswasasimpleaccidentachainofeventsthatcouldnothavebeenforeseenbutthecomputerfilestelladifferentstorywefoundtwoversionsoftheupgradereportwhichwaswrittentodetailtheproceduresformodifyingtheelectricalsystemonthetankthefirstgivesacomprehensivelistofthecablingswitchgearandcontrolsystemsthatneededtobehardenedforthegroundbasedvoltageitlistseverycriticalcomponentexceptthethermostaticvalvesthisdocumentwasfiledintheservicerecordsoweknowitwastheofficialrecordbutthechiefsystemsengineerwhosigneditoffsaysthesignatureonitisabadcopyofhisownwefoundidenticalcopiesinseveralmissionfilesbothinthemanufacturersrecordsandatkennedywheresomeofthetestswerecarriedoutsoitisclearthatthiswastheofficialversionusedintheupgradethesecondversionappearedtobethesamedocumentbutitincludedthethermostaticvalvesonthelistofcomponentstobechangedandthetemperaturegaugelimitswerecircledseveraltimeswithanexclamationmarknexttotheeightydegreeceilingitlookslikeoursaboteurdeliberatelyarrangedforthetanktobemisconfiguredinanefforttocausetroubleforthemissionalthoughwecantbesuretheyrealisedhowdangerousthiswaswhenweputittogetherwithalltheotheraccidentsitisprettyclearthiswasanotherdeliberateattackontheprogramwefoundthesecondversionofthereportinaboxunderthefloorboardsinmikesplaceisupposeitispossiblethatmikehadstumbledacrossthedocumenthimselfandwasinvestigatingitaspartofhiscampaigntoprovethattherussianswerebehindthisstringofproblemsbutattheveryleastheisguiltyofamajormisjudgementandiftheastronautshaddiedhewouldhavebeentriedformanslaughterasitistogetherwiththeleakchargeshewillbegoingtoprisonforaverylongtimeofcoursetheevidenceisstilllargelycircumstantialwecandefinitelytiehimtotheleaktothenewspaperforensicsmatchedthetypewriterribbonandtypecharacteristicsonhistypewriterwiththeinkandimpressionsonthelettertotheeditorbutwestillcannotshowconclusivelythathedirectedorcarriedoutanyofthesabotageattemptsandwehavenotbeenabletofindanyoneelsewhohadbothmotiveandopportunitysoheisourbestsuspectiamnotsurewecanentirelyrelaxbutwithnosignificantincidentsonapolloxivtoxviandwithmikeincustodyifeelslightlylessworriedabouttheremainingapolloflightwearestilltryingtocrackthatotherenciphereddocumentwefoundinmikesplaceithasaverystrangealphabetwhichithinkmustbesignificantbuticantquiteseehowtobreakityetnowthatthenasacomputingexpertshavemoretimeiamhopingthatweshouldbeabletodecipheritandthatitwillshedsomemorelightonmikesthinkingmoreimportantlyitmighttelluswhatelseifanythinghehadplannedmeg