EDO Corporation. The Group's principal activities are designing and manufacturing advanced electronic mechanical systems and engineered materials for use in domestic and international defense and industrial markets. The Group operates in three segments. The defense segment of the Group manufactures marine and aircraft systems and combat systems and analysis. The products of defense segment are sold to the US department of defense and to the US government for resale to foreign governments. The communication and space products segment addresses the needs of the remote sensing. Engineered materials segment includes electro-ceramic products and advanced fiber composite structural products. On 06-Feb-2003, it acquired Advanced Engineering and Research Associates Inc and on 11-Mar-2003, Darlington Inc. Defense and aerospace systems accounted for 74% of 2002 revenues; communications and space products, 14% and engineered materials, 12%.