Strange business in a cave in Mexico

[donsu]

http://news.bbc.co.uk/2/hi/americas/3566691.stm

UK cavers prompt diplomatic row

The presence of six British men trapped in a flooded Mexican cave for the past week has provoked a diplomatic row.

Mexican President Vicente Fox wants to know why the cavers - five of whom are military staff - are on tourist visas.

The team, safe in a dry part of the cave, has rejected offers of help from Mexican rescue teams and are awaiting the arrival of UK military divers.

-snip-

"We are asking the British government to tell us whether these people are military personnel, and if they are, what they are doing there."

The Foreign Office confirmed the Mexican ambassador to the UK would lodge a protest, but said: "This is strictly a caving expedition, has no other purpose and any suggestions to the contrary are completely unfounded."
-snip-
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the article ends by saying this was just an "adventurous training expedition" and "not on exercise."


tell me, who sits in a flooded cave and turns down immediate help?

what were UK soldiers doing in Mex?