Dib ducked and rolled before climbing over the eight foot wall before him. The coach had actually prepared them a real army obstacle course. Dib ducked beneath the wire net, crawling over muddy ground to get to the next area. Most of the teens were having trouble with this and Dib was glad he'd spent ages doing this type of stuff to catch Zim, since he was now second in the class. Zim had easily manoeuvred his way through most of the course and Dib half-wondered why he hadn't been this agile during their chases or fights...
Someone grabbed his ankle and Dib abandoned that trail of thought as Chunk 'accidently' shoved his face into the mud. Dib rolled free as the bully laughed. How he'd gotten close without Dib realising was a mystery. Dib didn't really care though, too busy trying to catch up to Zim.
Spitting out mud, Dib continued on, climbing from beneath the net to face a fifteen foot wall. Ropes dangled from it's top, trailing to about a foot from the floor. Dib took the farthest from Chunk, planting his feet on the wall face as he scaled it, arms easily carrying his weight. This was tiring enough already yet they had to do it three times before class was over and only then could they could clean up, change and go home. Dib clenched the rope tighter as his foot slipped, mud losing him traction. This would only get harder after more people tried it and Dib could tell by the end of the set, this wall would be coated from top to bottom in slippery mud.
He had no choice but to carry on though. It was this or face detention in the underground classrooms...