Sylvain Veilleux University of Maryland Andreas Burkert Universitats-Sternwarte Munchen Reinhard Genzel Max Planck Institute for Extraterrestrial Physics Luis C. Ho Peking University Dong-Chan Kim Associated Universities, Inc. Dieter Lutz Max Planck Institute for Extraterrestrial Physics Chien Y. Peng GMTO Corporation David B. Sanders University of Hawaii Linda Tacconi Max Planck Institute for Extraterrestrial Physics