Exhibit 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our reports included in or incorporated by reference in this Form 10-K into the Company's previously filed Registration Statements on Form S-8 (Nos. 2-78324, 33-35590, 33-15965, 33-45011, 33-69224 and 33-83400). ARTHUR ANDERSEN LLP May 25, 1996 Washington, D.C.