Vacuums Suck Hard! Adventures of the USS Big Stick

What could possibly go wrong?
Gunnery Sergeant John Doe is frustrated. He didn't join the Space Corps to be shuttled-around in a ship. He joined to fight. The only real action he's seen so far have been a few small skirmishes. Bad guys died. The good guys won. Just a typical day.
For years he's been itching for a big fight. Something he can use to impress his junior Space Marines. Something that'll help him pick-up chicks. Something that might put him in some real danger. He gets excited just thinking about the possibilities. He's hoping this tour aboard his ship, The Big Stick, will be different.
After defeating a long-time enemy, the Space Federation decided another war was just what the people needed. One was intentional. Two were not. Either way, Gunny was excited.
Yet there he was, stuck on a ship performing patrols in a quiet area of space, and bored almost to tears. Until, that is, the area became anything but quiet.
Now Gunny and the rest of the ship's crew have to fight for their lives against an enemy none of them expected to see.
"This action-packed romp lends an interplanetary twist to a battle-of-the-sexes romantic comedy." Virge B., Proofreader, Red Adept Editing