text: Glossary
  centerline an imaginary line that extends lengthwise and bisects the bottom of the
  helicopter fuselage
  CG center of gravity
  CH cargo helicopter
  chemiluminescent a plastic tube filled with a liquid chemical and a glass vial that when activated
  light produces a glowing light known as chemiluminescence
  choker hitch a knot formed by placing a strap or cord around an item and passing the free
  end of the strap or cord through the loop formed by the other end
  clevis a "U"-shaped yoke device with a bolt or pin through the two ends
  COMSEC communications security
  connector link a metal link device that joins the ends of a nylon web loop together, such as
  used on the web ring of the 15,000-pound capacity multileg sling
  constant power the point at which a helicopter engine produces a fixed level of performance
  CONUS Continental United States
  CP command post
  CRC control and reporting center
  CRL container ramp load
  CRS Container Release System
  DCA defensive counterair
  dep departure
  det detachment
  DF direction finding
  down wash also called "rotor wash." High-velocity air movement under a hovering
  helicopter
  downslope downhill; descending; a slope that lies downward
  downwind in the direction that the wind is blowing
  drawbar a beam across the rear of a vehicle or aircraft to which implements are hitched
  drop-off a very steep or perpendicular descent
  DS direct support
  DTG date-time group
  dual-point load cargo or equipment rigged and suspended from two cargo hooks
  DZ drop zone
  DZSO drop-zone safety officer
  DZST drop-zone support team
  DZSTL drop-zone support team leader
  ECCM electronic countercountermeasures
  ECM electronic countermeasures
  EMT emergency medical technician
  end bar the removable side of a connector link
  energy-dissipating artificial cardboard packing material. In parachute operations, protects
  material equipment by dissipating shock or energy when the package lands
  ETA estimated time of arrival