Refugee Puzzle

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Across
  1. 2. a fleet of ship or boats
  2. 4. an Arabic acronym for Islamic State of Iraq and Syria (ISIS)
  3. 5. wild and crazy atmosphere
  4. 6. type of unguided bomb often filled with nail and scrap metal
Down
  1. 1. Jewish day of rest
  2. 3. a demon sea serpent from theology and mythology