Twenty-one papers present the latest advances in the understanding of mechanical behavior of adhesives. Their focus is on aircraft and naval applications. The mechanical testing section discusses techniques and specimen designs for determining tensile, shear, and mixed-mode properties of adhesives. Papers on stress analysis consider both analytical and experimental methods to analyze the stress in an adhesively bonded joint. In the section on failure mechanisms examples are presented for several types of adherents and specimen geometries. The final section considers design and durability of bonded joints.