Raptor 3 is the designation of a Raptor deployed to scout the planet Kobol with three other Raptors.
Raptor 3 is destroyed with all hands (including its pilot, ECO, an additional eight crewmembers, including at least four Colonial Marines) after colliding with a Cylon Raider almost immediately upon entering orbit (TRS: "Kobol's Last Gleaming, Part II").