FAA OKs Tasers on Commercial Flights  NEW YORK (Reuters) - Stun gun maker Taser International  Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=TASR.O target=/stocks/quickinfo/fullquote"&gt;TASR.O&lt;/A&gt; on Monday said it won U.S. government approval to  use its products on some commercial airline flights to protect  passengers from potential harm.