[ OOOBSA
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14 c. There 1a a possibility that some of the inci~ent.'J ::ay be
1
caused br natural .pbe:noaena, auch a3 meteors.
d. 'lhe reported operatil:g characteristics so.ch as ~reme
rates o! cliab, mnt!1fferability (particular]J' in roll), aDi act!.on which
m.st be ccnsidered en.siTe ll'hen sighted or contacted by fngn~ air-
cra.!t a!'.d radar, lend belief to the pcssibilit7 that some or t :·.e object.a
are c:m"trolled either mar.~, autoz:atic~ or re.:notely-.
e. T~e a pparent co=~ c .:-ecripticn o~ t h<? objects is aa follew3 :-
( l) lJetallic '-':' light :.-eflectir.5 s '.ll'!'ace.
SECHE':
Basic Lt.r t'r CG, J.MC, M' to co, W'1 '1ash. D. C. subj •ill: Opin!.-:,n Con-
cerning •F~g Di.sea•.
(2) Absence or trail, except in a fp instances when the
object apparent~ was operating und~ hig.'l :f,or!or-
mance ccnditions.
(3) Circular or elliptica1 in shape, flat an b~tam. and
domed a::1 top.
(4) Severa1 reports a! -.ell kept f"ormation !'"-ight.s nrJ"1Dg
!rom three to nine object8.
(5) Uarmlly no a.ssociated scu.-x!, except. in t.arc.o instances
• 911bstantia1 ru...bling roar was noted.
( 6) Level !liiht speeds nonr.ally' above 300 kr..Jts are csti-
mted.
r. It is poas!.ble 11:i.thin the prese:1t u. s. k:Dow:l.ed;e - pro-
vided ert.erusiv9 detailed develop::ent :!.s •.mdert.a;c~ - to ccr.struct a
piloted airc~-aft r..ich baa the 69:ia~l descripti~ or the o~;~ct !n sub-
pa!cl~r~~ (e) above which would be capable or an &?;)rad.mate ran,;.? or
7J'JO mihs at su~scni.c speecb.
g. ~ developments ir. this cou."ltr:, alon.: the lines indicated
woul.:i be ~?.le~ expensive, ti.ma co:1.Smdng am at t:ie considera;:ile ex-
pense of current projects and therefore, if' directec!, should be:, .,; up in-
dep-.ndent~ O! existing ~:rojecta.
b. Dae consid~rat.1.on J111St be given the folloiring:-
(l)
(2)
The possibilit,. that these objects are or domestic
origin - the product or some bi.gb securit7 i:roject
not known to JI;/AS-2 or this Commnd.
The lack or pbJsical evidence in t~ ahape of. crash
reccrnred uhibite 1'hich woul.d UDde!li.abl,y prove the
existence o! these objects.
I