"Explosive Return"

Starfleet was thrown into a state of disarray when the Iconians arrived through a rift, appearing directly at Earth Spacedock and claiming revenge for a fallen commander who had been killed by Starfleet in the past. Refusing to de-escalate the situation, the Iconians turned this into a battle – wiping out Starfleet vessels with a highly-concentrated energy beam. Earth Spacedock itself was hit, creating masses of casualties. Thankfully the Phoenix managed to beam out the weapon generator and encase it in cryogenic technology to freeze it; effectively preventing the Iconians from conducting any more damage. The battle was then ended, the Iconians forced to flee.