law: Sashastra Seema Bal Act, 2007 
  103.  Commission for examination of witnesses.
  1.       Whenever,
  
  in the course of a trial by a Force Court, it appears to the Court that the
  
  examination of a witness is necessary for the ends of justice, and that the
  
  attendance of such witness cannot be procured without an amount of delay,
  
  expense or inconvenience which, in the circumstances of the case, would be
  
  unreasonable, such Court may address the Judge Attorney-General in order that a
  
  commission to take the evidence of such witness may be issued.
  2.       The
  
  Judge Attorney-General may then, if he thinks necessary, issue a commission to
  
  any Metropolitan Magistrate or Judicial Magistrate of the first class, within
  
  the local limits of whose jurisdiction such witness resides, to take the
  
  evidence of such witness.
  3.       The
  
  Magistrate to whom the commission is issued, or, if he is the Chief
  
  Metropolitan Magistrate, or Chief Judicial Magistrate, or such Metropolitan
  
  Magistrate, or Judicial Magistrate, as he appoints in this behalf, shall summon
  
  the witness before him or proceed to the place where the witness is, and shall
  
  take down his evidence in the same manner, and may for this purpose exercise
  
  the same powers, as in the trials of warrant-cases under the Code of Criminal
  
  Procedure, 1973.
  4.       When
  
  the witness resides in a tribal area or in any place outside India, the
  
  commission may be issued in the manner specified in Chapter XXIII of the Code
  
  of Criminal Procedure, 1973.