The Boss: When Focus Leads the Way. “New Orleans defines who I am,” said Arnold Donald, chief executive of the Juvenile Diabetes Research Foundation International. By As told to PATRICIA R. OLSEN.

Home Front: Training for the Twists of Driving a School Bus. A program in Brooklyn helps low-income or unemployed New York City residents become bus or truck drivers. By JOSEPH P. FRIED.

Under New Management: Life After a Merger: Learning on Both Sides. Managers should act promptly (and creatively) to keep the best people after a deal. By KELLEY HOLLAND.