GE is very backed up due to budget constraints. But, if you either watch the availability or are willing to risk a fruitless visit to t GE facility, it's likely that close-in appointments open (2-3 days out) or that they will simply deal with you on a walk-in basis. I think that they allow 20 minutes for an interview and most probably take well under 10. Lots of free time and they're pretty decent about it.