UNC ASSIFIED I ' •• • MIGHTY DERRINGE EX l CIS --- XZllCISB CA 86-07· PAG 12 02 DEC 8'6 SUMAAAV ASSESS KENT rROfli CCC r 1J SSIN 1'0t1 DOl- HQ tl -40 ATTN T l U UUt NBRil' U11't01 COP Yi · NVO G ALLIN W ADA KS J LANL M LUCAS STILLMAN 1 AGGUGATZ ASSESSMENT1 NE ELI V HIS INCIDENT SKOULD Bl TREATED AS A REAL THaDT TO aoT THE UNl ED ' STA r%S AND TO MONTRltV THE AVAILA8LB INFORJIATION SUGO STS TSAT ' O 2 I 11'PROVX SJD NUCL Al D VIC S lND' S Pft08ABLY 'BAVZ BEEN ASSl 01 EI J ruR'l'BER KOBE i THESK DEVICES KIGHT Bl CAPABLE or PRODUCING A NUCLEAR YIEilD W · ARE M ObEllATELY CON PI DENT IN OUJt OVJCRALL ASSESSMENT TEAK SUJOtAlUES 'tHB FOLLOWING CONCLUStONI SUMMIJtIZ£ THE IND PI EVALUATIONS or TBS CREDIBILITY A SS SSKENT' T AMS COPIES OP TBS ASSOCIATED D AILID REPORTS BAVZ VEEN TJUt NSMITTED'TO DOI I ACT ' SEPAllATELY TECHNICM CRIDIBILITY LLNli 1 'l'RS 'tHP AT IS nEAt Wt'l'B LOW T0 MODSRATE · CONrIDENCB PROII THI K AGEK INPORMTION 'WHICH ws HAVE zaTAINING o THB SIGN or TBS DSVICIS WB BELIEW THU TO BE IMPLOSION DKVlCBS WITH· PLUTONIUM AS TllS SNK rf I f J j a l ' -' l ' _ _ j I l' ' f --0A l t J '--' i1 A LJL_I -' f t •• UNCLASSIFIED IXERCIS MIGHTY 0' ERRINGD · 1xaRCtSE ' - 'A 86-07- PAGE 3 t ANlt il ·- t ' THU IS IN8UFfICllSMT TECHNICAt INFOIUIA1' 0N TO DRAW A CON C LUSION1 HOWEVER WE BELIEVl ' IT 'l'0 E A HOAX MITH C0NY IDENC MODEi ATE WS l l AVE ASSUMED THAT ·THIS SITUATtON MA ISULT' IN AN 1 LND THREAT BIUlN l·I OllAu CRIDIBILITY PLC t THE THREAT Is CREDIBIU W2TII MOOf ltATJ CONrIDENCE 1• SM A a NO · ACTIVATED OPERA tONA 'CREOIBILITY LLNL LANLt 1 TR ' THREAT IS CR l IBLE WITH A flOOIMTS DS-GJtE' or COYPIDE'NC NEUTRON GENS KA1'0as AND CO RES HAVK 8-ZEN STOLBH WI HAVB ONLY ONE PIKSON'S STORY THAT TBISS COMPONDITS WILt BE ASSEMBLED b 1 IXERCill MIGHTY D JUlrNG a · '0 l EXBRCISZ · I