UPDATE 1-U.S. Sen. McCain raps Air Force on Russian rocket engines
March 18, 2015 at 18:11 PM EDT
WASHINGTON, March 18 (Reuters) - Senator John McCain on Wednesday criticized the U.S. Air Force's "troubling lack of urgency" in ending dependence on Russian rocket engines for space launches, saying there was still no strategy to replace them a year after Moscow seized the Crimea.