Oscar 9
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'Oscar 9' was a UNSC D77-TC Pelican dropship. It was constructed in 2552, at the same time as Oscar 5, [[Oscar 6]'], and Oscar 8[1].
Although Oscar 9 is not mentioned by name in the film, O9 is clearly visible on the Pelican's cockpit, which conforms to the identification scheme of UNSC Pelicans.