
The Air Force expects the results from its review on the Russian-made RD-180 first stage rocket engine around the end of May, service Secretary Deborah James told the House Appropriations defense subcommittee Wednesday. Air Force Under Secretary Eric Fanning said recently the service was performing a “business case analysis” of how much it would cost to produce the RD-180 in the United States. Air Force Chief of Staff Gen. Mark Welsh told reporters after the subcommittee hearing the Air Force,…