"Jorge R. Frank" writes:

OSP is definitely one of them. The rest haven't been decided. Long-term
shuttle upgrades are one attractive target.

Surely OSP is obsolete considering the plans for a CEV. It looks like
a CEV ought to be able to perform the OSP mission anyway. If you can
take a CEV to Mars and back, using it on ISS as a CRV and CTV ought to
be a "piece of cake".

Long term shuttle upgrades seem to be a "no brainer". You simply sort
these into upgrades that pay off before the shuttle is retired and
into upgrades that don't. The difficult part is how heavily you
weight the safety benefit of an upgrade versus the cost.

Jeff
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