July 10, 1963

Dr. Harold Bradn
Dlrsrctor of Research and Enginwwtng
Dapartmerut of Daftsnsa
Warhlf3gtof-i 25. D. c.

Dear Harold:

1 am doubtless puking wher8 I have noithw infamtion nor warrant to,
but I could not help reacting to tlw outcome #ummwIzlsd in the attached
clipping.  I am ~811 war-0 how littl8 I k&w about it, but your conclusion
about "promature systrrm-orktted hardwars!' fits exactly tha impmssions
I had to draw when 1 stumbled on the probIom in looking for analoguss to
infrared roconnaisanca of Hars.  I was absolutely dumb-struck by haw I ittlrr
attrntion was b81ng paid to thus nec8ssary fundamontafs - as far as I know
it still remains true that wa hav8 a bpttsr global infrared wflection
spectrum of Mars (Sinton) than WB do uf the earth!

I have bean w-y -11 impresmd b  tha efforts that iR research groups have
ma& to maintarn effestiva c-n cation,
           T     but I still wondw if a good
large part of ths prObbm doss nut stem from too sew~tiv8 a securfty
classificatiar of work in this ar8a.  Yw may hav8 gQ& mw0f-f to support
such a classification, but the ceInSidsrr8tionS Wttinod in the sutmmry of
your teetheny would stlbni to point In the opposite dirwtion. Against the
"costs" af a much more liberal clessfficatim policy would be the foIlwing
advafeagos:

1.  Vrry intw%stfng research and cfvilian applicatfarrs of rtw classified
  IR tachnolagy, 8nd

2.  Wuch broadar scimtiffc scrutiny of the fund~tals d With this
  w8%pQnS sy~t8m must b% bawd.  For axampld, our dtswssims on iR
  rwonffalsance of Hars have rcrpwtedly alluded to classified Ifimge tub8
  doveloqwnts which it was not practicabis to pursua furthar &causar
  of thgtr classlficat!on.

Thor-s was one ccmSi&wat?on which was not alluded to tn your tssttmony, and
this ie thrr probably fmportance of a Etidas systrno in arms control.  it s#yns
to m8 very important that we do lay the necwsary tschnologicol basis for
this type of racannaisance, , eww if tha mermntary applicdion to mwo
plauSibl8 dsf8nse nsads is aS flimsy as it is hon. This application would
lrrnd furth8r weight to tha security p~sitton outlinad in tha prcpvtous
paragraph.


Dr. flarold 5rum1

You w0 11 of course know the countervai 1 iny arywents.

With `best wishes,

                        Sincerely ywrst

Joshue Lederbsrg
Professor of Genet fcs

July IO, 1963
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