- I First Dawn I
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- Exalted Member
In the beginning of the Reach trailer, right before the first explosion, you hear a female voice saying: "Sierra 320 prepped for combat insertion." and at the end a male voice saying: "This is Sierra 259. You got Spartans on the ground, sir. We're not going anywhere."
This may seem insignificant except for the fact that there were only 150 candidates for the Spartan 2 program and they were all numbered from 1 to 150. The only Spartans who ever had a numbered designation higher then 150 were the Spartan 3s as there were 300 slots available and more then 300 candidates for each generation. This could mean that the Spartans speaking in the trailer are Spartan 3s.