whose president, Buu Nygren, argued that the Moon is sacred to the Navajo and other American Indian nations.

In June 2021, ULA CEO Tory Bruno announced that payload and engine-testing problems would delay the maiden flight of Vulcan, with Mission One aboard, to 2022. On February 23, 2023, ULA announced an expected launch date for the mission of May 4, 2023. After an anomaly during testing of the Vulcan Centaur on March 29, the launch was delayed until June or July,