In the small building in the junkyard, Shredder, Rose, Tatsu, and several Foot watched intently while Professor Jordan Perry worked. He had used discarded containers and tubing from the junkyard to make his chemical setup. There was a rubber hose leading from one of the pots, across the ceiling of the hut, and into a couple of small barred holding cells. Shredder looked at the cells and then at Tatsu.
"Those were the two most vicious animals you could find?"
"Ngggh," Tatsu confirmed.
"Good," Shredder said. Then he turned to the scientist at work. "Professor?" he asked.
"Preparations are complete. However..."
"Begin," Shredder said, uninterested in the professor's hesitation.
"However," the professor continued, not wanting to be interrupted, "I feel compelled to reregister my formal protest and remind you of the imminent dangers of..."
He was interrupted. He was interrupted by Tatsu, who glared at him threateningly. Professor Perry knew when a battle was lost. "But enough talk," he said lightly. "Let's begin."
He turned a valve on his setup, raising a flame beneath a pot. The greenish liquid began to bubble menacingly. It swelled and rose, spurting through the tubing and, finally, into the holding pens, where it sprayed with tremendous pressure.
Behind his mask, Shredder grinned in anticipation.