01/30/2013
https://www.congress.gov...
"If we had no more access to RD-180s immediately, could we instead shift Atlas V resources as we use existing RD-180 stock to the Delta IV and maintain our medium-lift assured access to space?"
"If phasing out the Delta IV medium-lift variant makes the Heavy variant more expensive, why is the Air Force supporting ULA's decision to phase out the Delta IV and rely on the Atlas V?"
"I think it is very important that we receive it right away. It is not going to continue to be in development."
"What worries me, and what I think we need to understand, is what risk we are taking on."