COPT Defense Properties is a fully-integrated and self-managed real estate investment trust (REIT) focused on owning, operating and developing properties in locations proximate to, or sometimes containing, key U.S. Government (USG) defense installations and missions. Its tenants include the USG and their defense contractors, who are engaged in priority national security activities, and who generally require mission-critical and high security property enhancements. Its properties include 195 operating properties totaling approximately 22.4 million square feet comprised of 16.5 million square feet in 164 office properties and 5.9 million square feet in 31 single-tenant data center shells.