A/N: Sorry this chapter took so dang long! I wasn't really sure where it was going, but I've got it figured out now.
With one elegant sweep of her mace, Shayera smashed the left monitor's control panel.
"The point is. To. Fix. It." GL snapped. "Not to decimate it."
"This way we can just get a new one and be done with it," she glared at him. Scattered around the room were various blueprints, tools, and empty water bottles.
"How did we ever fix these computers before?" John asked tiredly. They had been at it almost three hours.
"Bruce would do it."
"Of course."
Superman came in, grumbling. He tripped over a circuit panel. "What the heck?! Haven't you finished yet?"
"No," John said. "It's Batman's design, and how often do you think he let anyone else go inside these things?"
"Never, of course," Superman sat down awkwardly on one of the open metal frames. "And its not like he would come back up here for an hour just to repair it."
"Who would dare even ask him to?"
"We have a problem," Flash said, materializing in the doorway.
"Tell me about it," John replied. "We can't see all of Eurasia."
Flash gingerly stepped forward and examined the smoking hole Shayera's mace had left. "Ohh…is this the reason the shuttles and transporters aren't working?"
Shayera and Superman looked up sharply. "What did you say?!"
"The transporters and shuttles aren't—"
But they were already out the door.
************************************************
The main room. That was where trouble would focus. Superman ran to the stem—the vertical hall the ran the height of the Tower so you could fly up to any level. He jumped up…
…and fell right back down. Behind him, Green Lantern was trying to get his ring to work. Shayera's wings wouldn't unfold. Flash was running, but he couldn't go faster than a normal human.
Every television screen in the Watchtower, including the monitor rooms, went static. Then they slowly focused into a face. No, faces. Two.
The Ultra-Humanite and Gorilla Grodd.
"Hello, Justice League," The Humanite began, in his customary, disturbingly polite voice. "You are experiencing a lack of powers. This is because of my new invention that nullifies any gene or variation not found in a standard human."
Grodd grinned, showing both rows of teeth. "Which makes it very easy for us to destroy you."
"Now," the Ultra Humanite resumed control. "Please be so kind as to find your way to cafeteria. And do not try to contact anyone—all functions of your headquarters are now under our control."