text: Chapter 5
  GROUND CREW PROTECTIVE MEASURES AND EQUIPMENT
  5-68. Working around hovering helicopters exposes ground crews to a variety of dangers. Leaders must
  do everything they can to ensure the safety of the ground crews. The crews themselves should use the
  following safety equipment (Figure 5-17).
  Helmet
  5-69. This protects the wearer from head injuries caused by flying debris. It also protects him if his head
  were to get caught between the aircraft and the load, for example. Wearers must keep helmets securely
  fastened.