As a result of the Mars Climate Observer loss, the NASA Inspector General
conducted a review of NASA's use of the metric system.
The report can be found at:
http://www.hq.nasa.gov/office/oig/hq/inspections/g-00-021.pdf
The concern of NASA's IG about NASA's "inconsistent" use of the metric
system might be a pressure point for the members of the USMA Listserv who
continue to push on NASA webmasters to incorporate more metric units into
their sites.
Good luck to those who can make use of the information in the report.