BOSTON--(BUSINESS WIRE)--American Tower Corporation (NYSE: AMT) today announced that its Executive Vice President and President, U.S. Tower Division, Steven Marshall, is scheduled to speak at the Cowen Communications Infrastructure Summit in Boulder, Colorado on Wednesday, August 12, 2015 at 12:45 p.m. MT. The live audio webcast link will be available on the Company's website, www.americantower.com. American Tower, one of the largest global REITs, is a leading independent owner, operator and de