DALLAS–(BUSINESS WIRE)–AECOM (NYSE: ACM), the trusted global infrastructure leader, today announced it was awarded a position on the U.S. Missile Defense Agency’s Scalable Homeland Innovative Enterprise Layered Defense (SHIELD) indefinite-delivery/indefinite-quantity contract. With a ceiling of $151 billion, the contract encompasses a broad range of work areas that allow for the rapid delivery of innovative capabilities with increased speed and agility. “This award reinforces the trust that o