https://edition.cnn.com/asia/live-news/thai-cave-rescue-live-intl/index.html
From CNN's Ryan Browne:
There are 36 US military Pacific Command personnel involved in the Thai rescue operation. They're mostly from Kadena base in Japan, according to a US military official
The group includes a 12-man search-and-rescue team, which including divers. The US divers were not expected to participate directly in rescue dives.