Orbital Sciences Corporation announced that at a special meeting held this morning, the company’s stockholders voted overwhelmingly to approve the proposed merger with the Aerospace and Defense Groups of Alliant Techsystems Inc., pursuant to the definitive transaction agreement dated April 28, 2014. Approximately 99% of the votes cast at the special meeting voted in favor of the adoption of the transaction agreement, which represented approximately 85% of the total number of outstanding shares of Orbital common stock as of the December 16, 2014 record date for the special meeting.