URS Corp signed a 91,350-square-foot lease in Germantown’s Milestone Business Park. The San Francisco-based engineering, construction and technical services group inked a long-term deal at 12420 Milestone Center. The lease represents an expansion of 5,000 square feet from its current space in Montgomery County at 200 Orchard Road in Gaithersburg. In late 2010, pharma giant MedImmune LLC bought that 104,000-square-foot building for $27.5 million. The engineering firm will relocate to the Milestone III building and enjoy signage on the 156,600-square-foot, 3 year old structure. The 36.5-acre business park, which currently consists of three buildings, has approval to build two more totaling about 500,000 square feet. Studley’s Laurent Myers represented the tenant.