Baseball arm: Since Zach frequently plays baseball, specifically the outfield, he has a very good arm. He can throw a baseball, or a baseball sized object, over 70 yards.
Knives: Zach loves to whittle. He always has his bucknife, and frequently uses it. He has it in case of an emergency, and can cut, slice, whittle, and throw it at will. He needs to work on his aim, however, and there isn't a big chance he can hit something with the knife. Yet, he can carve items.