Commander, Navy Region Southwest Logo Commander, Navy Region Southwest
Commander, Navy Installations Command
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  • Rear Admiral Stephen Barnett

    Navy Region Southwest Commander


    Rear Adm. Stephen D. Barnett is a native of Columbia, Tennessee. He is an alumnus of Tennessee State University, where he received his Bachelor of Science in Mechanical Engineering, and Troy State University where he earned his Master of Business Administration. He earned his commission at Aviation Officer Candidate School in 1991.

  • CAPT Mark S. Nieswiadomy

    Navy Region Southwest Chief of Staff


    Captain Nieswiadomy is a native of Fort Worth, Texas. He is a graduate of Texas Christian University (TCU) where he earned Bachelor of Arts Degrees in Political Science and History. He received his commission at Officer Candidate School in Pensacola, Florida, in 1996.

  • Dennis P. Keck

    Navy Region Southwest Executive Director


    Dennis Keck served in the United States Navy for over 20 years. He graduated from the State University of New York Maritime College in 1995, receiving his commission and an unlimited U.S. Coast Guard Third Mate’s license.

  • Master Chief Valissa A. Tisdale

    Navy Region Southwest Regional Master Chief


    Master Chief Tisdale joined the Navy from Grenada, MS.  She attended basic training at RTC Orlando, Florida and Ship’s Serviceman “A” School in Meridian, Mississippi.  After graduating from SH “A” School, she reported to her first command, USS HUNLEY (AS-31) in Norfolk, VA.  After three assignments serving as a Ship’s Serviceman, she changed her rating to Master-At-Arms and attended MA “A” School at Lackland Air Force Base, San Antonio, TX in 1998.