WEST LAFAYETTE, Indiana, July 23 -- Purdue University issued the following news release: More than 1,700 graduating students will take their next giant leap during Purdue University's two summer commencement ceremonies at Elliott Hall of Music on Aug. 3. Jennifer Rumsey, a Purdue University alumna and native of Columbus, Indiana, serves as chair and CEO of Cummins Inc. and will deliver a keynote speech at both ceremonies. Purdue President Mung Chiang will be in attendance, and each ceremony wi  more