\ t lf'l'i'l f I v1suv.l r;r o nnd ~;Ot!TID nofl'"' d lolL . ', tL lCi.../\SSli-1 . Incident tlo. 71 8 or 9 October 1947, d aytir.c J L:ls VeL-as, H~vaclo.. An Air r'orco Reso1'"Vc pilot reported obser'rinl; 'l t:~il Cl.p;>oarinL.: hi t)'1. i11 the oky aL an esti.nated spee d of 400-lOUO l~l.. TI1c objcJct pro,1ucint,; thJ trail 'V1as not vioible. 'Ihe trail was mute as a cloud, and didSitJJ.t:..!d ~1 fifteen to twenty oinutes. 'Ihe ob j ect proceeded in a str~ir-;itt J:ine, -Lhcn it I!'.Ade an 8pi;roxioately lC:0 turn Of rodiUO fi'TC to fifteen t"'.iles, !"J.nd proceeded a'lfay toYro.rd the clirection of first app,~arance. 'ihe reathor ;~as d escribed as naJ.nost cloudless. n AIC OPinion: It ia difficult to U.l"lderst.J.nd '"IT'rr;r.this 'L~civ:idual ::ttt.ached any inporto.nce to tttis sicr1tinr.;, a.Ixi why he did noL co':l~li.!de t~:l.t Cle t r a i l \ns c au..9ed by e;r~ctly .-;hat ~ t <lppcars to Lave be ~n; t1mt i~, an orc.:.-:.n ary ~.:..r c raft rlyin;; no~rl.:tll:r at an 2-ltit.u.tlc too hit.~' fo1 j~.!.;t.:l.f t 0 bt> .j J.i~l7:_, b,.::t ~L.l thu bt.:!>t nl~itudc ra11~c to for~ ~r..1por tra~.l!J 20,CNO -l....~,OJo ~\:::~: .. c, (Superoades intorirr. ro_r;or t o f 2/L ... /~:J) or e o~touor 1 7 I n eve r:rt:1i n t; exoe_tJt t r:e c ourso l'lcvr:L. tne uo~cri:Jtio:: biven here a.n:Jwrlrs to that of a. firollilll. 'l'i:o c oJ rso indicu~cd in tills incident. h owever, o.p?oars al. . .os: i"'uta.l to ~uch tt 1\j',Jctnes:.s ~:no.1n to turn u 1..cl: on it.s.>lf. t:unn1ur , that v: Jro irlli.:iit>lo 51"'.;'3 !'or .L warke~ ,,~!ilo oluJ~lL.::e =..e~l <lo ~lt t to:t ffoct3 Of t~HJ 'OtJt :>or' S 9!\IJO l!1t!r v:ith t}FJ nt1::o.~.,h Jr LO ~70 tttO it~o t ,! :ut. :-rt.!~t oe N:ti;Jec