What are the ten essentials? Give your answer in JSON, with the name and examples of each essential.
[
  {"name": "Navigation", "examples":  ["map", "altimeter", "compass", "GPS device", "personal locator beacon"]},
  {"name": "Headlamp", "examples":  ["LED headlamp", "spare batteries"]},
  {"name": "Sun protection", "examples":  ["sunglasses", "sun protective clothing", "sunscreen"]},
  {"name": "First aid", "examples":  ["first aid kit"]},
  {"name": "Knife", "examples":  ["knife", "multi-tool", "tape", "cordage"]},
  {"name": "Fire", "examples":  ["butane lighter", "matches", "firestarters", "stove"]},
  {"name": "Shelter", "examples":  ["plastic tube tent", "jumbo plastic trash bag", "bivy sack"]},
  {"name": "Extra food", "examples":  ["at least one day's food"]},
  {"name": "Extra water", "examples":  ["drinking water", "skills and tools to purify water"]},
  {"name": "Extra clothes", "examples":  ["items to spend the night"]}
]