Thunderbolts (1997) #27

From the pages of X-Men flies the Archangel! The Thunderbolts have a new headquarters, a new transport ship and a new mission: to prove themselves by taking down the biggest villains at large! Their first target: Graviton! Their surprising ally: The X-Man known as Archangel! Now that he's no longer hangin' with the X-Men, will Warren Worthington III join the T-Bolts?