A Matter of Magnitude

When you're commanding a spaceship over a mile long, and armed to the teeth, you don't exactly expect to be told to get the hell out ...
The ship, for reasons that had to do with the politics of appropriations, was named Senator Joseph L. Holloway, but the press and the public called her Big Joe. Her captain, six-star Admiral Heselton, thought of her as Great Big Joe, and never fully got over being awestruck at the size of his command.
She's a mighty big ship, Rogers, he said proudly to the navigator, ignoring the latter's rather vacant stare and fixed smile. More than a mile long, and wider than hell. He waved his hands expansively. She's never touched down on Earth, you know. Never will. Too big for that. They built her on the moon. The cost? Well ...
Swiveling his chair around, Heselton slowly surveyed the ship's control room with a small, satisfied smile. The two pilots sitting far forward, almost hidden by their banks of instruments, the radar operators idly watching their scopes, the three flight engineers sitting intently at their enormous control consoles, and, just behind, the radio shack—its closed door undoubtedly hiding a game of cards. For weeks now, as Big Joe moved across the galaxy's uncharted fringe, the radio bands had been completely dead, except, of course, for the usual star static hissing and burbling in the background.
Turning back again to his navigator, Heselton smiled modestly and noted that Big Joe was undisputedly the largest, most powerful, most feared, and most effective spaceship in the known universe.
As always, Rogers nodded agreement. The fact that he'd heard it a hundred times didn't make it any less true. Big Joe, armed with every weapon known to Terran technology, was literally the battleship to end all battleships. Ending battleships—and battles—was, in fact, her job. And she did it well. For the first time, the galaxy was at peace.
With a relaxed sigh, Heselton leaned back to gaze at the stars and contemplate the vastness of the universe, compared to which even Big Joe was an insignificant dot.