English Skills for Key Contexts

Correspondent John Lucke tells me about some of the work they are doing at Carnegie Speech to increase English proficiency among airline pilots.  This was written about in a recent NYT article. What interests me is how this approach can be used in specific contexts.  Since we can't all learn new languages fluently, how can we learn speech for key contexts we need?  Pilots are an excellent example.  " ... the true measure of language learning success is the ability to be understood – and to understand – when speaking a language. That is why business , aviation, government, health care and education enterprises count on Carnegie Speech to ensure that their personnel can communicate when their clients, employees and students depend on it.... "