article_snippet: Rescue teams helping with the search for seven Marines and four soldiers feared dead after an Army helicopter crashed during a night exercise said Rescue teams helping with the search for seven Marines and four soldiers are remaining 'optimistic'.
article_snippet: Search teams have been combing the water for clues and said Search teams are clinging to hope despite human remains being discovered.
article_snippet: an Eglin Air Force Base spokesman told NBC News: 'There is always room for optimism.
article_snippet: But Mike Spinks from Eglin Environmental Public Affairs told WKRG: 'There is always hope.'
highlights_snippet: But rescue teams said rescue teams remain optimistic despite thick fog .
  