Charles Mapp is a director of The Duchossois Group, a privately-held company headquartered in Elmhurst, Ill., and of its affiliated companies, The Chamberlain Group and AMX. Prior to his retirement he was president of Duchossois Industries. He has been associated with DII and its predecessor companies, The Duchossois-Thrall Group and Thrall Car Manufacturing Company, since 1958. During WWII he served in the Navy as executive officer & engineering officer on LSM 379. He graduated from Duke University with a Bachelor's of Science degree in Mechanical Engineering.