Oscar 5

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Oscar 5 (far left) under construction

Oscar 5 was a UNSC D77-TC Pelican dropship. It was constructed in 2552, at the same time as Oscar 6, Oscar 8, and Oscar 9[1].

Though Oscar 5 is not mentioned by name in the film, O5 is clearly visible on the Pelican's cockpit, which conforms to the identification scheme of UNSC Pelicans.

References