This Amendment No. 1 (the “Amendment”) amends and supplements the statement on Schedule 13D originally filed by Curtiss-Wright Corporation with the Securities and Exchange Commission on November 13, 2012. Unless otherwise indicated, each capitalized term used but not defined herein shall have the meaning assigned to such term in the Schedule 13D.

          As a result of the Merger, Item 2 is hereby amended to remove Purchaser as a Reporting Person. In addition, Schedule A-3 to Schedule 13D – List of Executive Officers and Directors of Purchaser is hereby deleted.

          Item 3 of the Schedule 13D is hereby amended and supplemented as follows:

          On December 14, 2012, Purchaser accepted for purchase approximately 6.6 million Shares tendered and not withdrawn from the Offer, for an aggregate consideration of approximately $119 million, without interest thereon, less any applicable withholding and transfer taxes. Purchaser acquired the Shares using capital provided by Curtiss-Wright.

          Item 4 of Schedule 13D is hereby amended by inserting the following at the end thereof:

          The Offer and withdrawal rights expired at 11:59 p.m., New York City time, on December 13, 2012. On December 14, 2012, all Shares validly tender and not properly withdrawn as of the expiration of the Offer were accepted for payment in accordance the terms of the Offer.

          Pursuant to the Merger Agreement, on December 14, 2012, Purchaser exercised its Top-Up option. Accordingly, on December 14, 2012, Purchaser and Issuer effected a “short form” merger in which Purchaser was merged with and into Issuer, with Issuer surviving the Merger.

          Upon effectiveness of the Merger, (i) each issued and outstanding share of common stock of Purchaser that is outstanding immediately prior to the Merger was converted into one validly issued, fully paid and nonassessable share of common stock, par value $0.01 per share, of the Surviving Corporation, (ii) each Share of Issuer common stock that is issued and outstanding immediately prior to the Merger (other than shares of the Issuer common stock owned by Curtiss-Wright Controls, Purchaser or Issuer, or by any direct or indirect wholly-owned subsidiary of Curtiss-Wright Controls, Purchaser or Issuer and the appraisal shares under Delaware law) was automatically converted into the right to receive the Offer Price in cash, without interest, upon the terms and subject to the conditions set forth in the Merger Agreement, and (iii) all such shares of Issuer common stock were canceled and ceased to exist without any conversion thereof or consideration paid therefor.

          On December 14, 2012, Curtiss-Wright issued a press release announcing the expiration and results of the Offer. The full text of the press release is attached as Exhibit (a)(5)(C) to Amendment 3 to Schedule TO filed by Curtiss-Wright on December 17, 2012 with the Securities and Exchange Commission and is hereby incorporated by reference.