How security is changing at John Hopkins.

William McLean, CHPA, is security director at Johns Hopkins Medical Institutions, Baltimore, MD. Formerly chief of security with the Baltimore City Department of Hospitals, McLean has worked in health care security at the director level for 15 years. He also spent eight years with the Baltimore City Police Department. At Hopkins, officials recently decided to overhaul the $7 million security operation because of increasing crime. In this interview, McLean talks about some of the changes.