Mojowuq9 Please correct my explanation of your situation if I'm missing something or got something wrong.)
Following the sudden appearance of a portal in their territory, followed by the unexpected arrival of a small TIE fleet. The Cog Republik decided to join their investigation, as well as the pointing of their artillery at the small fleet. While both sides order the other to leave, a compromise is almost made when a large, circular, and purple emp wave disables half of the fleet. Artillery fire hits the portal, causing the fleet to scramble. However no damage is inflicted upon the portal, instead a beam of pure energy is deflected back. Now the fleet remains motionless, as half is stunned while the rest remain motionless. The next move is that of the Cog Empire...
(Duu duu du du du duuu duu du du du duuu duu du du du duuuu du du...)
https://forum.cosmoteer.net/d/9795-mysterious-portals-one-last-shot/77