Lockheed, General Dynamics Win U.S. Army Contract &lt;p&gt;\&lt;/p&gt;&lt;p&gt; By Andrea Shalal-Esa&lt;/p&gt;&lt;p&gt; WASHINGTON (Reuters) - The U.S. Army on Tuesday awarded\General Dynamics Corp. &lt;GD.N&gt; the lead role in developing a new\warfighter communications system, with Lockheed Martin Corp.\&lt;LMT.N.&gt; to get an equal share of the work, which GD said was\worth \$7 billion through 2018.&lt;/p&gt;