Shelton Versus McCain on Import of SpaceX Failure, SpacePolicyOnline
"Sen. John McCain (R-AZ), Chairman of the Senate Armed Services Committee (SASC), and Gen. William Shelton (Ret.) view the June 28 SpaceX launch failure very differently. In a McCain statement and a Wall Street Journal op-ed by Shelton, the two take opposite positions on what should be learned from the failure in terms of national security space launches and how long Russian RD-180 engines are needed by the U.S. military to have assured access to space. The congressional push to end reliance on RD-180s began while Shelton was still on active duty and Commander of Air Force Space Command and he and McCain differed on these issues all along. At the last congressional hearing on the topic during Shelton's tenure, in July 2014, they were fully were on display. Apparently nothing has changed."