Sprite Mechanim Question

So first time im asking for help so sorry if its way too easy.

So I'm just working on learning the 2D myself and was wondering about the mechanim. You see with the sprite im using, Megaman, he has a running animation and a running shooting animation. However when I fire a bullet I call the shooting animation while running, however if the fire button is spammed the sprite animation resets.

You can see it here https://dl.dropboxusercontent.com/u/200124747/Public.html

i'll also show screenshots of the mechanim I am using, including triggers

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