Rep. Mac Thornberry
Aerojet Rocketdyne's Julie Van Kleeck doing a television interview following an April 12 media roundtable at the 32nd Space Symposium. Credit: SpaceNews/Brian Berger
Atlas Cygnus OA-6 launch
Sen. John McCain, center, opened a March 17 Senate Armed Services Committee hearing by asking Defense Secretary Ash Carter to investigate controversial statements that cost a ULA executive his job. Credit: DoD/Senior Master Sgt. Adrian Cadiz
Rep. Mike Rogers (R-Alabama), above, said after a three-hour hearing he would prefer the Air Force re-engine the Atlas 5 rocket. Credit: C-SPAN.
Frank Kendall, the U.S. undersecretary of defense for acquisitions, technology and logistics, addressing the Washington Space Business Roundtable Feb. 23, 2016. Credit: SpaceNews/Mike Moser
Frank Kendall,  the Pentagon's acquisition czar, said a preliminary opinion from the Treasury Department means use of the Russian RD-180 rocket engine does not violate U.S sanctions. Credit: Michael Moser.
Lt Gen Samuel Greaves, commander of the Space and Missile Systems Center, officiates and activates the Lauch Enterprise at a ceremony in Gordon Conference Center, 14 Oct, 2015. Mrs. Leon stood up as the new director of the Launch  Enterprise directorate, presenting a display of the new shield that  sympolizes  goal, strength, and through boldness to the stars.
U.S. Air Force Secretary Deborah Lee James testifies before the Senate Armed Services Committee Jan. 27. Testifying with James was Frank Kendall, the undersecretary of defense for acquisition, technology and logistics. Credit: U.S. Air Force photo/Scott M. Ash
U.S. Rep. Kevin McCarthy. Credit: U.S. House/Justin LoFranco
Senate Armed Services Committee Chairman John McCain (R-Ariz.) will hold a hearing Jan. 27 on Russian rocket engines. McCain has been a vocal critic of the Air Force's reliance on the RD-180 engine. Credit: Roll Call video capture
A 1/6 scale model of the AR1 engine currently in development by Aerojet Rocketdyne as a replacement for the Russian-built RD-180 engine that powers United Launch Alliance's Atlas 5 rocket. Credit: Aerojet Rocketdyne
The RD-180 engine powers ULA's workhorse Atlas 5 rocket.  Credit: NASA
Atlas 5 Cygnus launch
Atlas 5

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