Wilton B. Williams, Hua-Xin Liao, M. Anthony Moody, Thomas B. Kepler, S. Munir Alam, Feng Gao, Kevin Wiehe, Ashley M. Trama, Kathryn Jones, Ruijun Zhang, Hongshuo Song, Dawn J. Marshall, John F. Whitesides, Kaitlin Sawatzki, Axin Hua, Pinghuang Liu, Matthew Z. Tay, Kelly Seaton, Xiaoying Shen, Andrew Foulger, Krissey E. Lloyd, Robert Parks, Justin Pollara, Guido Ferrari, Jae-Sung Yu, Nathan Vandergrift, David C. Montefiori, Magdalena E. Sobieszczyk, Scott Hammer, Shelly Karuna, Peter Gilbert, Doug Grove, Nicole Grunenberg, Julie McElrath, John R. Mascola, Richard A. Koup, Lawrence Corey, Gary J. Nabel, Cecilia Morgan, Gavin Churchyard, Janine Maenza, Michael Keefer, Barney S. Graham, Lindsey R. Baden, Georgia D. Tomaras, and Barton F. Haynes Science aab1253Published online 30 July 2015 [DOI:10.1126/science.aab1253]