U.S. astronauts won’t set foot on the Moon until September 2026 at the earliest, following NASA’s announcement of multiple delays to Artemis missions stemming from safety concerns for astronauts flying aboard the Orion spacecraft, and the need for further development of key technologies.
We do some of that already.
I spent a couple months in South America going port to port. We had a bunch of military doctors from other countries even.
Just show up and give aid for like a week then off to another one.