Joal Newcomb received a B.S. degree in physics and mathematics from Southwestern Oklahoma State University, an M.S. in atomic physics from Kansas State University, and a Ph.D. in experimental atomic physics from Kansas State University. He is currently a research physicist in the Acoustics, Simulations, Measurements & Tactics Branch of the Naval Research Laboratory at the John C. Stennis Space Center, Mississippi. Dr. Newcomb was the chief scientist of OUTPOST SUNRISE, a major acoustic measurement program, and has been principal investigator of several projects to study underwater ambient noise, broadband and narrowband signal propagation, and basin reverberation. Dr. Newcomb is an internationally recognized expert in underwater ambient noise and shipping noise. Dr. Newcomb was involved in and played a leading role in the planning, design and execution of surf- and transition-zone ambient noise measurements. Dr. Newcomb was recently involved in studies of the spatial variability of ambient noise and the effects of shelf edge oceanography on acoustic propagation. Dr. Newcomb is currently the lead experimental investigator for the Littoral Acoustic Demonstration Center (LADC). He is also the lead for a project to help determine the effects of anthropogenic noise upon bottlenose dolphin. Dr. Newcomb is an adjunct professor at the University of Southern Mississippi. He is a member of the American Institute of Physics, the American Physical Society and the Acoustical Society of America.