Allow me to clarify further, is this script necessary for the base state (layout, content, etc.) of the page to load? 

If not, then I would call it from later in the DOM (i.e. right before the body element closes). See http://www.feedthebot.com/pagespeed/prioritize-visible-content.html for a simple explanation of what JavaScript calls do within the head to loading the basic HTML of the page requested.