What job/title do Mark Hunter and Jeffrey Walker have in common?
Mark Hunter (musician) Mark Hunter (born May 26, 1977) is an American musician and photographer and is the vocalist for the heavy metal band Chimaira.
Ernest Mahone Ernest "Mark" Mahone (born September 19, 1961) is a pediatric neuropsychologist and director of the Department of Neuropsychology at Kennedy Krieger Institute. He is also a professor of psychiatry and behavioral sciences at The Johns Hopkins School of Medicine, and is on the core faculty in psychology for the Maternal and Child Health Bureau (MCHB), Leadership Education in Neurodevelopmental and Related Disabilities (LEND) program, and the Intellectual and Developmental Disabilities Research Center (IDDRC).