The spacewalk will be the second of three planned spacewalks during the expedition to upgrade batteries on the space station, which NASA said were delivered on the Japanese HII-Transfer Vehicle last summer.
But Wednesday's announcement illustrates how quickly NASA has embraced a new era dominated by private space companies who are offering the option of low-priced transport on a mission-by-mission basis.
"I'm very excited", Welten said.
"As the nation's premier multi-user spaceport, Kennedy Space Center is integral to NASA's sustained missions to deep space exploration".
Such a scenario could mean that the SLS' first true liftoff to space would have astronauts aboard, with no preliminary uncrewed launch.
He said that while there is an emphasis on space exploration and increased funding for the lunar gateway project, this also hides the fact that the funding is possible because several - and maybe numerous most crucial - science programs will be destroyed.
Bridenstine went on to share NASA's plans for the future in a statement on NASA's website explaining how, with newly innovated technology, we could start to see a more diverse group of astronauts traveling to space in the future.
Bridenstine told a Senate committee that two private rockets would be needed, one to launch the Orion crew capsule and its European-built service module, the other to launch an upper stage. "All of the above".
"We have incredible capabilities that exist right now that we can use off the shelf to accomplish this objective", the NASA administrator said.
"We're now understanding better how hard this project is and that it is going to take additional time", Bridenstine said of SLS, which has been in development since 2011. "All of this is going to be possible because we are looking at going fast". He said the USA plans to have a "sustainable", although not continuous, human presence on the moon.
"It is about having a sustainable human presence on and around the moon", he insisted. McClain is now a part of the Expedition 58/59 crew that launched to the International Space Station (ISS) in December 2018.
"I think we as an agency need to stick to our commitments", Bridenstine said. "We want robots and landers and rovers".
"It's time to take the next giant leap because we are the pioneers, the star sailors, the thinkers, the visionaries, the doers and because we stand on the shoulders of giants to go further than humanity has ever been", it gushed. The Gateway is not just about getting to the moon.