In April 2016, Bigelow signed an agreement with United Launch Alliance (ULA) to launch the first B330 module in 2020 using an Atlas V rocket. In October 2017, Bigelow and ULA announced they are working together to launch a B330 expandable module on ULA's Vulcan launch vehicle. After outfitting in Earth orbit, the B330 will be boosted to low lunar orbit by two further Vulcan ACES launches by the end of 2022 to serve as a lunar depot. The first B330 launch was originally planned to be launched aboard an Atlas V rocket, but ULA stated in October 2017 that its in-development Vulcan rocket was the only launch vehicle available with the performance and fairing capacity to carry the module. The timeline may be 'aspirational' as ULA have indicated that the Vulcan will transition to using ACES upper stage around 2024.