S1·E45 Old Puffer Pete's Firebox

Puffer Pete's firebox is completely worn out and he can't move without it. It's going to take ages to have a new one made. Until then, Pete is stuck and can't move by himself. Meanwhile the trainees are playing hide and seek in Old Town. Brewster hides in a shed. When he emerges, he's covered in bits of old junk. Koko and Wilson think it's funny!