Student or Learner
Is this "as" to mean "when" or "because"? And also does the dash right before it function as a detailed description?
ex)...The plaintiffs of the class-action suit included a detail of seven African-American Secret Service agents who sat waiting for an hour for their breakfast while their white colleagues at the next table were served promptly - as they were all on their way to provide security for a visiti by President Clinton to the United States Naval Academy at Annapolis...
It would be "because," not "when." Personally, however, I think it reads better with "since," instead of "as" or "because."