Vulcan was so excited to be back in uniform that he could hardly stand still. At least he was very good at giving angry tough face. You learned to in prison or you died, basically. He scowled when Xavier announced he was registered, but didn't say a word. He darted glances at Havok, who was team leader now, and at Magneto from time to time.
Ultimately, it was Magneto's call to arms that got him running forward. "You gonna come here with this shit? I don't think so," he growled at no one in particular, throwing up a curtain of fiery concussive energy between his team and the shower of darts coming their way. Two of the darts made it through and hit him, but fortunately they sank into his body armor without piercing the skin.