Legends of the Multi-Universe: A-Team episode 26 The Battle of London

Story: The Beezleboss League attacks London, England in force. Torchwood and UNIT  in the Canary Wharf area end up attacked by the combined forces of the revived Persian and the Helghast armies. They are supported a dropship and Helghast cruisers. The A-Team is called in to provide much needed assistance until the British Army can rally enough troops to drive them back. In response Otacon and Elder Lyon deploy the Liberty Prime robot and the Brotherhood of Steel Paladins to assist the A-Team. During the battle Colonel Mael Radec makes things difficult but he is stopped in the end. As the surviving enemy forces attempt to retreat back through the portal to hell they emerged from John Yamato has the Minerva fire its positron beam cannon destroying the cruiser, dropship, and portal all in one shot.