The Alosinae, or the shads, are a subfamily of fishes in the herring family Clupeidae. The subfamily comprises seven genera worldwide, and about 30 species.

Project SHAD, an acronym for Shipboard Hazard and Defense, was part of a larger effort called Project 112, which was conducted during the 1960s. Project SHAD encompassed tests designed to identify U.S. warships' vulnerabilities to attacks with chemical agents or biological warfare agents and to develop procedures to respond to such attacks while maintaining a war-fighting capability.