Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: US Awards Airliner Antimissile Contracts  WASHINGTON (Reuters) - Northrop Grumman Corp. &lt;A HREF="[Link] target=/stocks/quickinfo/fullquote"&gt;NOC.N&lt;/A&gt; and  BAE Systems PLC &lt;A HREF="[Link] target=/stocks/quickinfo/fullquote"&gt;BA.L&lt;/A&gt; were tapped by the Bush administration  on Wednesday to develop competing systems to protect U.S.  commercial aircraft from shoulder-fired missiles, a potential  multibillion-dollar market.

Business