What everyone is saying - a metal snips & leather gloves.
A Skill saw with a reversed old or a dedicated metal sawblade, eye protection, ear protection, same leather gloves as above. This will get more done, but you'll need the snips. Saw will be about as easy (much noisier!) as cutting the same amount of wood.
Do _not_ skimp on the eye & ear protection, we are not kidding on that part! This is for real, not those endless pointless safety disclaimers in the manuals we get. You need it with the saw, & anyone helping you too. For real.
--->Paul