text: FM 2-22.3 _________________________________________________________________________________
  most expedient means available, normally in SALUTE report format. The
  HUMINT collector then resumes his questioning of the source at the point
  where the hot lead was obtained.
  COLD LEADS
  9-22. A cold lead is a statement made by a source either spontaneously or in
  response to questioning that indicates he has information on a topic of
  interest other than the one currently under discussion but that would not
  answer PIRs. The HUMINT collector makes note of the cold lead and exploits
  it after the planned questioning objectives have been satisfied or at the
  appropriate time during the questioning sequence.
  DETECTING DECEIT
  9-23. HUMINT information often has the capability to be more accurate and
  reliable than other disciplines. SIGINT information, for example, is not
  always able to return to the original source of the information to determine
  the reliability of the information, and interpretation of IMINT information
  may be uncertain. However, while HUMINT can be reviewed for reliability,
  determining the reliability of human sources is a continuous process
  accomplished by carefully assessing not only the sources of information but
  also assessing the information itself.
  9-24. Detection of deception is not a simple process, and it normally takes
  years of experience before a HUMINT collector can readily identify deliberate
  deceit. Inconsistencies in the source’s actions or words do not necessarily
  indicate a lie, just as consistency is not necessarily a guarantee of the truth.
  However, a pattern of inconsistencies or unexplainable inconsistencies
  normally indicate deceit.
  TECHNIQUES FOR IDENTIFYING DECEIT
  9-25. Techniques for identifying deceit include but are not limited to the
  following:
  • Repeat and control questions (see paras 9-9 and 9-10).
  • Internal inconsistencies. Frequently when a source is lying, the
  HUMINT collector will be able to identify inconsistencies in the
  timeline, the circumstances surrounding key events, or other areas
  within the questioning. For example, the source may spend a long time
  explaining something that took a short time to happen, or a short time
  telling of an event that took a relatively long time to happen. These
  internal inconsistencies often indicate deception.
  • Body language does not match verbal message. An extreme example of
  this would be the source relating a harrowing experience while sitting
  back in a relaxed position. The HUMINT collector must be careful in
  using this clue since body language is culturally dependent. Failing to
  make eye contact in the US is considered a sign of deceit while in some
  Asian countries it is considered polite.
  • Knowledge does not match duty position or access. Based on the
  source’s job, duty position, or access the HUMINT collector should have