text: Glossary
  Type III nylon cord a thin rope made of several strands of Type III nylon woven together
  Type IV link a device used to connect two ends of a flat web nylon strap together
  connector
  Type X sling a nylon aerial delivery sling consisting of two, three, or four consecutive loops
  of Type X nylon webbing
  Type XXVI sling a nylon multiloop-line sling consisting of two or more consecutive loops of
  Type XXVI nylon webbing
  UH utility helicopter
  UHF ultra-high frequency
  upslope a slope that lies upward; uphill
  upwind the direction from which the wind is blowing
  USAF US Air Force
  USCG US Coast Guard
  USMC US Marine Corps
  USSOCOM United States Special Operations command
  VAPI visual approach-path indicator
  VDC volts of direct current
  vertical pendant a high-strength sling or strap used to increase the clearance between the
  helicopter and the load
  vertical riser a suspension member oriented in a vertical direction
  VHF very high frequency
  VIRS Verbally Initiated Release System
  VMC visual meteorological conditions
  V-shaped approach the area within a designated arc or sector measured outward from the center of
  path the landing point
  web ring the apex fitting of the 15,000-pound capacity, multileg sling set
  web ring connector a metal connecting link that joins the two ends of the web ring strap on the
  bar 15,000-pound capacity, multileg sling
  web ring strap a nylon web loop that forms the web ring on the 15,000-pound capacity,
  multileg sling
  whiteout a loss of orientation with respect to the horizon due to caused by blowing
  snow, the sun reflecting on the snow, or an overcast sky
  windchill factor the cooling effect of moving air
  yd yard(s)