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In the News
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- RCGA Awards Ceremony, November 2009: Whelan Recognized With a Greater St. Louis Top 50 Award
- The Security Letter, Volume XXXIX: Largest Security Watch, Guard and Patrol Companies 2008
- St. Louis Business Journal, April 2009: Top 150 Privately Held Companies
- WKRN News Interview With Melissa Jones: 2009 Job Growth Projections
- Customer Service Newsletter, March 2009: Creating an All-Inclusive Service Performance Culture
- St. Louis Business Journal, January 2009: Dan Twardowski Recognized in 40 Under 40
- SBM, Volume 21, Issue IX: Time With The Boss - An Interview With Greg Twardowski, President of Whelan Security
- Security Magazine, October 2008: A Layered Approach to Office Building and Property
- Smart Business, October 2008: Securing the Spirit - How Greg Twardowski Has Led Whelan Security To Fast Growth Without Losing Its Culture
- Carlos Villarreal, CST, Moderates BOMA Emergency Preparedness Exercise: September 9, 2008
- Inc., August 2008: The Fastest Growing Private Companies in America
- St. Louis Business Journal, April 2008: Top 150 Privately Held Companies
- KTVI Fox News Interview with Greg Twardowski, Whelan Security President: Family Owned Businesses
- The Security Letter, Volume XXXVIII: Largest Security Watch, Guard and Patrol Companies 2007
- Performance Based Contracting, 2007: An Article by Prentice Robertson
- Security Management, August 2005: The Inside Story on Outsource Planning