[time-nuts] Atomic clock on ISS

[Jeff Mock]

Today's astronomy picture of the day says that future experiments in the 
new ISS Columbus laboratory include an atomic clock to measure miniscule 
  timing effects:

    http://antwrp.gsfc.nasa.gov/apod/ap080219.html

Does anyone know somthing about the sort of clock they're going to put 
in the new lab?  Presumably they'll also need a way to do time transfer 
and make precise timing measurements.  If I lived on a space station I 
would demand an atomic clock.

jeff