I'm not sure that clean water is actually a medical technology but you're definitely right, that would be an even better allocation of resources

I'd go for whatever they do to treat malaria: it currently affects 300 - 500 million people a year and somewhere around 1 to 2 million die every year.

There are other elections going on in the world ... you insensitive clod

political types who don't want their election strategies sent to the their opposition because someone at the NSA supports the other political party. political dissidents in "friendly" countries like Saudi Arabia who would be turned over at the drop of a hat. people who are negotiating contracts with the government and don't want their negotiating strategies revealed. whistleblowers.