Extensive tests on the plane's engine revealed the crack was a result of the "unique operating environment" of the test flight, and was not a widespread issue, he added.

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The four healthcare REITs all offer unique operating platforms and the common thread is that they all should capitalize on the attractive tailwinds of low interest rates and the new certainty of the Affordable Care Act.

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Operating in a fairly unique niche compounds the sense of isolation.

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While the two operating systems will retain certain unique features, they are nonetheless built on the same BSD Unix platform.

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But the future is about user access to content and experiences across devices that may have unique formats, operating systems, user interfaces.

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The new BlackBerry 10 operating system has a lot of unique characteristics including a very different way of getting around and launching apps.

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The scientists, of course, are keen to ensure that the gas companies are fully aware of the unique and sensitive habitats in which they will be operating, particular with respect to the spectacular coral reefs and fragile coastal ecosystems.

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The company also warns that there are risks unique to its industry, including competition for key players, as well as increases in operating costs, such as player salaries and transfer costs.

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Millions of trades occur in over 50 different and unique dark pools, internalizers and ECNS (all of whom have different (undisclosed) operating and business models) and no one can determine which dark pool did the trade.

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