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2  September  1952 
.  Mission,  Functions,  and  Responsibilities  of  the  USAF  Security  Service 
TO: 
Commanding  Generals  and  Commanding  Officers,  all  Air  Force  Activities,  ZI  and  Overseas 
1.  Purpose  and  Scope.    This  letter  states  the  mission  and  establishes  the  responsibilities  of  the 
USAF  Security  Service,    It  applies  to  USAF  Security  Service  activities  in  the  ZI  and  overseas. 
2.  Definitions.    For  the  purposes  of  this  letter,  the  following  definitions  apply: 
b.    Nonliteral  Signals.    Noncommunications  electromagnetic  radiations  which  do  not  result  in  a 
literal  text."" 
d.  Communication  Security  (CQMSEC).    The  protection  resulting  from  all  measures  designed 
to  deny  to  unauthorized  persons  information  derived  from  United  States  communications. 
e.  Cryptologic  Activities.    All-inclusive  term  embracing  COMSEC  activities. 
f.  Cryptologic  Material.    All  material,  including  technical  equipment,  documents  or  publica- 
tions employed  in  COMSEC  activities. 
g.  Integrated  Cryptographic  Equipment.    Those  components  of  communications  system  or  device 
which  provide  cryptographic  security  as  an  inherent  function  of  the  system  or  device. 
h.    Nonintegrated  Cryptographic  Equipment.    Equipment  employed  for  cryptographic  purposes; 
it  i6  often  operatively  associated  with,  but  not  an  inherent  component  of,  communications  equipment. 
d.    Insure  the  security  of  Air  Force  communications  (except  physical  security)  by  provic.:., 
cryptographic  materiel  and  by  making  recommendations  concerning  operating  techniques  ar^d  tr.t  eltect 
of  foreign  interference.
D^jr  AFOIN  322,  subject:  Mission,  Functions,  and  Responsibilities  of  the  USAF 
Security  Service 
e.    Operate  the  Air  Force  Special  Security  Office  System  to  insure  the  secure  transmission, 
candling,  and  storage  of  all  to  authorised  recipients. 
4.  Organization.    The  USAF  Security  Service  is  established  as  a  major  air  command.    In  order  to 
carry  out  its  mission  and  functions  and  the  directives  and  policies  of  the  Chief  of  Staff,  USAF,  the  USAF 
Security  Service  is  provided  with  a  headquarters  and  such  units,  establishments,  facilities,  and  per- 
sonnel as  are  considered  necessary  by  the  Commanding  General,  USAF  Security  Service,  and  approved 
by  the  Chief  of  Staff,  USAF. 
5.  Responsibilities.    Subject  to  policies  of  the  Chief  of  Staff,  USAF,  the  Commanding  General, 
USAF  Securify'Service,  will: 
a.  Exercise  command  jurisdiction  over  all  units,  establishments,  facilities,  and  personnel 
assigned  or  attached  to  the  USAF  Security  Service. 
b.  Perform  other  functions  required  to  accomplish  the  mission,  which  will  include: 
(1)  Formulation  and  implementation  of  necessary  plans,  policies,  and  doctrine  on  Air  Force 
cryptologic  matters. 
(2)  Dissemination  of  to  such  major  air  commands  as  may  be 
designated  by  the  Chief  of  Staff,  USAF. 
(3)  produced  by  prescribed  technical  cooperating 
agencies. 
(5)  Provision  for  the  specialised  training  of  units  and  individuals  engaged  in  cryptologic 
matters,  and  the  Special  Security  Office  System. 
(6)  Guidance  and  assistance  to  major  air  commands  in  the  planning  and  implementation  of 
as  requested. 
(7)  Service  testing  and  evaluation  of  all  nonintegrated  cryptographic  equipment  utilized  in  the 
Air  Force.    Service  testing  and  evaluation  in  coordination  with  the  Air  Proving  Ground 
Command  of  those  cryptographic  components  integrated  into  electronic  equipment, 
(8)  Determination  of  cryptologic  material  requirements  for  the  Air  Force  and  monitoring  its 
procurement,  as  well  as  supervision  of  issue,  storage,  distribution,  and  accounting. 
Monitoring  of  research  and  development  of  this  material. 
(9)  Provision  of  depot  maintenance  of  all  Air  Force  crypto-equipments  as  well  as  prepara- 
tion and  issuance  of  instructions  covering  the  procurement  of  cryptologic  spare  parts 
and  crypto-maintenance  within  the  Air  Force. 
(10)  Annual  inspection  of  Air  Force  cryptologic  installations. 
(11)  Continuing  surveillance  of  Air  Force  electrical  communications  and  nonliteral  signals. 
Provision  for  detecting,  locating,  and  recommending  defensive  action  against  foreign 
radio  countermeasures  and  deception  activities  as  directed  by  Chief  of  Staff,  USAF.
DAT  AFOIN  322,  subject: 
Security  Service 
Mission,  Functions,  and  Responsibilities  of  the  USAF 
(12)  Participation  in  disaster  relief  and  other  domestic  emergencies  as  required  by  the  majo; 
air  commands  designated  for  coordinating  such  activities. 
(13)  Participation  in  the  Reserve  Training  Program  to  the  maximum  possible  extent  for  the 
purpose  of  producing  adequately  trained  personnel 
Oy  exercising  responsibility  for  the  training  and  administration  of  Reserve 
officers  and  airmen  as  may  be  directed  by  Headquarters  USAF  and  by  training  and  admin 
istering  such  Reserve  units  as  may  be  assigned. 
(14)  Providing  communications  services,  when  requested,  to  meet  the  requirements  of  Head- 
quarters USAF  and  major  air  commands  for  evasion  and  escape  activities.    These  serv- 
ices wUl  consist  of  monitoring  transmissions  from  downed  crews  and  of  relaying  these 
transmissions  to  designated  centers. 
6.  Personnel.    As  directed  by  AFR  35-59,  personnel  will  be  reassigned  to  or  from  the  USAF  Secu- 
rity Service  only  with  the  prior  approval  of  Headquarters  USAF. 
7.  Direct  Communication.    Direct  communication  between  the  USAF  Security  Service  and  other 
major  air  commands;  Department  of  the  Army;  Department  of  the  Navy;  and  appropriate  agencies  of  the 
Department  of  Defense  is  authorized  for  the  exchange  of  information  and  the  coordination  of  cryptologic 
activities. 
8.  Logistic  Support.    Commanders  of  appropriate  Air  Force  activities  will  provide  normal  logistic 
support  to  units  of  the  USAF  Security  Service  located  in  their  area. 
9.  Conflicting;  Instructions.  This  letter  supersedes  letter,  Headquarters  USAF,  file  AFOIR-SR 
322,  20  October  1948,  subject:  "Functions  of  the  USAF  Security  Service,"  and  any  other  conflicting 
instructions  prevz>usly  issued. 
BY  ORDER  OF  THE  SECRETARY  OF  THE  AIR  FORCE: 
K.  E.  THIEBAUD 
.  Colonel,  USAF 
Air  Adjutant  General 
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