After four days of cleaning out the flooded basement of her mother’s house in New York’s Rockaway Beach neighborhood following Hurricane Sandy, Theresa Mohan realized that the stunned residents needed more than hot food and blankets.

So Mohan, who oversees business contracts for International Business Machines Corp. as a senior regional counsel for the East Coast, recruited some fellow attorneys and set up a tent with computers and an Internet connection to help people file applications for assistance from the Federal Emergency Management Agency. Her official volunteer badge was a piece of duct tape with her name on it.