10 percent for technology and future facilities development. The fraction allocated to NRAO plus ALMA will increase when ALMA becomes fully operational in 2014.

Many of the papers provided by the community as input to Astro2010 described projects that involve significant partnership—between university groups, between non-federal and federal partners, between federal agencies, and involving international collaborations. Almost all of the proposed large-scale projects ranked most highly by the Astro2010 Program Prioritization Panels involve a significant international collaboration of one form or another. The committee notes in particular LISA (NASA plus ESA) and participation in an international Atmospheric Čerenkov Telescope Array, from the Panel on Particle Astrophysics and Gravitation; WFIRST and IXO (NASA plus ESA), from the Panel on Electromagnetic Observations from Space; CCAT (a U.S.-led project with international university partners) and HERA-II (a U.S.-led project but a pathfinder for the international HERA-III