CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report included in this Form 10-K into the Company's previously filed Registration Statements (File No. 000-26076, File No. 333-58135, File No. 333-12257, File No. 333-12255, File No. 333-43047, File No. 333-31569, File No. 333-31571 and File No. 333-26427). Baltimore, Maryland, March 28, 2000