This document is a presentation titled "De-ice or Anti-ice? WhatÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂs an Airport to Do?" by Tony Myhra from cryotech Deicing Technology. The presentation was given at the 2009 NIGP Annual Forum. The document mentions a scientific approach that is evident during winter days when people drive to work or board planes to go to warmer places. However, without access to the actual content of the PDF document, it is not possible to provide a detailed summary or gist of its contents.