David P. Callan, P.E., CEM, HBDP, LEED AP, QCXP, is vice president of McGuire Engineers in Chicago. With more than 20 years of experience in energy engineering and high-performance building design, Callan is focused on developing buildings that use less resources and improve the lives of the people who utilize them. He is dedicated to helping his clients make the right decisions within the framework of their resources, regardless of project scale. Practicing the notion that "a successful building is about the people," Callan designs strategies for the long-term interests of the client, including the individuals who are responsible for maintaining the operations of the building for many years to come. His role as vice president of the firm allows him to continue to pursue his interests in engineering leadership. His ability to recognize and encourage individual talents have inspired the team at McGuire Engineers to create better buildings through excellence in engineering. For more information, visit www.mepcinc.com.