 This task was complicated by the fact that he had to build consensus between NASA's different centersmost notably the Manned Spacecraft Center in Houston headed by Robert Gilruth, and the Marshall Space Flight Center in Huntsville, Alabama, headed by Wernher von Braun.Relations between the centers were not good, and it was a major milestone in the progress of the Apollo program when von Braun and his team finally came to accept the superiority of the LOR concept.NASA announced its decision at a press conference on July 11, 1962, only six months after Shea had joined NASA.