Navies do goodwill visits to other countries. I remember when — in friendlier times — a Russian missile cruiser, the Varyag, stopped in San Francisco and did tours.
Navy to Set Sail on Goodwill Mission in Latin America, Caribbean
As part of the Continuing Promise deployments, U.S. personnel extend medical and veterinary services to local communities, conduct subject-matter exchanges and engineering projects, and host community events and band performances.
U.S. Navy medical personnel, construction experts, and musicians will deploy this year alongside Army veterinarians and professionals in the State Department-led Women, Peace and Security program to continue the tradition of extending goodwill.
Smith noted that the U.S. has delivered on that promise by working closely with partner countries to deliver more than 600,000 medical treatments, over 7,000 surgeries, and countless constructions projects and community engagements since the Continuing Promise mission began in 2007.
Navies do goodwill visits to other countries. I remember when — in friendlier times — a Russian missile cruiser, the Varyag, stopped in San Francisco and did tours.
kagis
https://www.sfgate.com/bayarea/article/russian-warship-makes-rare-s-f-appearance-3260994.php
EDIT: Here’s one that we did last year:
https://www.defense.gov/News/News-Stories/Article/Article/3821669/navy-to-set-sail-on-goodwill-mission-in-latin-america-caribbean/