114
Augustine et al., «Review of US Human Spaceflight Plans Committee,» NASA, October 2009, 83.
115
Rebecca Hackler, «Interview with Valin B. Thorn,» NASA Oral History Project,» December 17, 2012.
116
Joel Achenbach, «Obama Budget Proposal Scraps NASA’s Back-to-the-Moon Program,» The Washington Post, February 2, 2010.
117
Hackler, «Interview with Mike Horkachuck».
118
Wright, «Interview with Gwynne Shotwell».
119
Debra Werner, «SpaceX Leaves Searing Impression on NASA Heat Shield Guy,» SpaceNews, March 9, 2015, accessed September 27, 2017, http://spacenews.com/spacexs-high-velocity-decision-making-left-searing-impression-on-NASA-heat-shield-guy.
