text: Tactical Control Measures
  Figure A-46 depicts a blue kill box. Figure A-47 depicts a purple kill box. (See ATP 3-09.34/MCRP 3-
  31.4/NTTP 3-09.2.1/AFTTP 3-2.59 for more information on kill box planning and employment.)
  Figure A-46. Blue kill box
  Figure A-47. Purple kill box
  RESTRICTIVE FIRE SUPPORT COORDINATION MEASURES
  A-96. Restrictive fire support coordination measures prevent fires into or beyond the control measure without
  detailed coordination. Their primary purpose is to provide safeguards for friendly forces, noncombatants,
  facilities, or terrain. Restrictive FSCMs include a no-fire area (NFA), a restrictive fire area (RFA), and a
  restrictive fire line (RFL). Establishing a restrictive measure imposes certain requirements for specific
  coordination before the engagement of those targets affected by the measure.