Lockheed Martin Corporation will webcast live its 2007 first quarter earnings conference call on Tuesday, April 24, 2007, at 11 a.m. EDT. Chris Kubasik, Executive Vice President & Chief Financial Officer; Meg VanDeWeghe, Senior Vice President, Finance; and Jerry Kircher, Vice President, Investor Relations, will discuss first quarter 2007 financial results and provide updates on key topics.

The live audio webcast, along with a Podcast version and relevant financial charts, will be available for download and can be viewed on the Lockheed Martin Investor Relations website www.lockheedmartin.com/investor. An on-demand replay of the conference call will also be available at this website.

Headquartered in Bethesda, Md., Lockheed Martin employs approximately 140,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. The corporation reported 2006 sales of $39.6 billion.

For additional information, visit our website: www.lockheedmartin.com

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SOURCE: Lockheed Martin Corporation