KrankysFirebrand48 as the squadrons came closer to the gun, they saw the pirate's counter attack, 2 Battlecrusier like warships blocked their path.

"Launch the fighters!!!" shouted the commanders of the raider scum, and a cloud of tiny fighters began exiting the warships' bays and creating a wall of scrap metal. "Attack!" shouted the commander and the swarm charged into the host of wraiths and vikings.

the battle was messy, huge losses on both sides, the wreckage of small vesels crashing against the shields of larger ones. Chaotic radio chatter reverberated through both fleets. The larger ships were well protected with shields and point defense systems, and weren't affected much by the engagement. Then, the Terran squadron saw the pirated battlecruiser's spruced up super weapon!
Commader of one of the warships: "fire the doom cannons! now!".
pilot: "We will hit our fighters too!"
Commander:"Genius! What makes you think so?"
And shortly thereafter, as the massive blast doors at the front of the battlecruiser receded, the terrans got to see the triple-linked yamato that would be their DOOM!

Meanwhile...
The pirate's gigantic cannon finally managed to align itself with one of terrans' battlecruisers, likely thanks to the banshees blasting off its main engine block. The pirate admiral whined: "Gyarh! What took you so long!? I want to see one of their ships crippled already! What do you mean we're out of range?! THe bullet isn't going to just vanish! Fire you Nitwit! FIRE!!!"
The Cannon's shaft began glowing under the strain of the firing procedure, and as the structure creeked and groaned, the muzzle expelled the projctile with a thunderous roar! As the projctile reached the terran battlecruisers, it exploded with enough force to send out a gravitational wave, which briefly lensed the light in the region, obscuring the damage it has brought upon the defenders...

