The network in its early years was not as robust as it is now. A failure of the Atlantic satellite in the spring of 1969 threatened to stop the "Apollo 11" mission; a replacement satellite went into a bad orbit and could not be recovered in time; NASA used undersea cable telephone circuits as an alternative to route Apollo's communications to NASA during the mission. During the Apollo 11 moonwalk, the Moon was over the Pacific Ocean, and so other antennas were used, as well as INTELSAT III, which was in geostationary orbit over the Pacific.