American Red Cross Instructors

     Appalachian Trail Conference (VA area sections)

     BeanTree Learning Schools

     Boy Scouts of America

     Centre LifeLink EMS

     Centre Region & Fairfax County CERT Teams

     Centre Region CREST

     Department of Homeland Security

     Dulles Int'l Airport Staff

     Fairfax  & Loudoun County Public Schools

     Federal Emergency Management Agency

     FRU-CON Construction Company

     Girl Scouts of the USA

     Gold's Gym

     Loudoun County, VA Government

     Maryland & Virginia State Police

     McLean Baptist Church

     National Institutes of Health

     National Wildlife Federation

     Pennsylvania State University

     Saab AeroTech, USA

     Steele Cloud Construction Co.

     Summer Camp staff (many)

     United States Army & Navy

     US Department of Agriculture

     US Geological Survey