The President’s strategy for expanding the capacity of high-speed wireless broadband services across the Nation may get a boost from a new Defense Department Initiative to fund research and development of innovative new approaches to spectrum sharing. Under one strategy for maximizing spectrum efficiency, commercial broadband providers are permitted to share spectrum bands that otherwise would be allocated for exclusive Government use, or vice versa; this approach can increase the productivity of a band that was designated for a specific purpose decades ago but is underutilized today.