Glenn pushes for money to extend shuttle operations, Houston Chronicle
"The White House blueprint, Glenn said, forced NASA to "cannibalize" existing programs such as the shuttle to finance the new direction. Chris Shank, a senior official at NASA, acknowledged in a telephone interview that NASA had not received additional funding to cover the president's blueprint. NASA also had shouldered unforeseen return-to-flight costs after the loss of the shuttle Columbia on re-entry in 2003. Shank declined to discuss the agency's reaction to Glenn's appeal or apparent effort to shape the space agenda for the next administration."