Comerica Inc., Detroit, promoted five vice presidents to senior vice
Cheryl A. Derezinski, in charge of retirement services.
Marvin J. Elenbaas, controller and chief accounting officer.
John R. Irwin, president of Comerica Securities, where he manages the
David L. Littmann, in charge of the economics department and research
Michael H. Michalak, in charge of corporate planning and development,
Comerica also promoted Gary W. Orr, a senior vice president and credit