Raptor 3
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Raptor 3 was a Raptor deployed to scout the planet Kobol. It was destroyed with all hands (including its pilot, ECO, and at least four colonial marines) by collision with a Cylon Raider almost immediately upon entering orbit. Since the same craft is referred to as both Raptor 2 and Raptor 275, it is unknown of this is meant to be the same craft as Raptor 312.