On 31 July 2008, Vice Admiral Barry McCullough (Deputy Chief of Naval Operations for Integration of Resources and Capabilities) and Allison Stiller (Deputy Assistant Secretary of the Navy for Ship Programs) stated that "the DDG 1000 cannot perform area air defense; specifically, it cannot successfully employ the Standard Missile-2 (SM-2), SM-3 or SM-6 and is incapable of conducting Ballistic Missile Defense." Dan Smith, president of Raytheon's Integrated Defense Systems division, has countered that the radar and combat system are essentially the same as other SM-2-capable ships, "I can’t answer the question as to why the Navy is now asserting … that "Zumwalt" is not equipped with an SM-2 capability". The lack of anti-ballistic missile capability may represent a lack of compatibility with SM-2/SM-3. The "Arleigh Burke"-class ships have BMD systems with their Lockheed-Martin AEGIS tracking and targeting software, unlike the DDG-1000's Raytheon TSCE-I targeting and tracking software, this could be a fatal flaw.