General Dynamics has reported second-quarter earnings from continuing operations of $666 million, or $1.79 per share on a fully diluted basis, compared with 2010 second-quarter earnings from continuing operations of $651 million, or $1.68 per share fully diluted. Revenues in the quarter were $7.9 billion. Net earnings for the second quarter of 2011 were $653 million, compared to $648 million in the second quarter of 2010. Company-wide operating margins for the second quarter of 2011 were 12 percent, with particularly strong performance in the defense segments. Operating margins for Combat Systems and Information Systems and Technology grew when compared to the year-ago period, and Marine Systems margins remained steady at 10.2 percent.