This workshop seeks to bring together researchers in disparate fields that involve wave propagation, such as seismic imaging, nondestructive testing, radar imaging, medicalultrasound imaging, medical microwave imaging, etc. These fields have developed independently of each other, and researchers in different fields can scarcely communicate with each other, in spite of the fact that they are working on problems whose mathematical foundations is high-frequency analysis for wave propagation. The goal of our first workshop will be to bring researchers coming from different applications together.