text: Drop Zones
  DANGER
  Set up the DZ away from power lines. A 50-volt shock can kill a
  jumper. Even if it does not, it could cause him to fall, and that
  could kill him.
  6-18. Try to site the DZ at least 1,000 meters from a power line. If you cannot, and a power line is
  located within 1,000 meters of any boundary of the DZ, then you must coordinate with the local power
  company to shut off the power to that line NLT 15 minutes prior to TOT. If this is not possible, then the
  flying mission commander, aircrew, and jumpmaster must assess the risk. They should consider at least the
  following:
  y Type of jump.
  y Jumpers' experience.
  y Aircrew's experience.
  y Ceiling.
  y Surface and altitude wind limits required to approve, suspend, or cancel.
  6-19. To further minimize risks, they should consider how they might alter the mission profile to raise
  or lower drop altitudes, change the DZ run-in or escape headings, or remove inexperienced jumpers from
  the stick. Also, if they can, they should clearly mark power lines with lights, smoke, or VS-17 panels.
  DANGER
  Set up the DZ away from power lines. A 50-volt shock can kill
  a jumper. Even if it does not, it could cause him to fall, and that
  could kill him too.
  Also, never try to climb power line poles to position or affix
  markings to the poles or the lines themselves.