Agent Green is the code name for a powerful herbicide and defoliant used by the U.S. military in its Herbicidal Warfare program during the Vietnam War. The name comes from the green stripe painted on the barrels to identify the contents. It was one of the so-called "rainbow herbicides" that included the more infamous Agent Orange. Agent Green was only used between 1962 and 1964, during the early "testing" stages of the spraying program.

Agent Green was mixed with Agent Pink and used for crop destruction. A total of 20,000 gallons of Agent Green were procured.

Agent Green's only active ingredient was 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), one of the common phenoxy herbicides of the era. It was later learned that a dioxin, 2,3,7,8-tetrachlorodibenzo-para-dioxin (TCDD), is produced as a side effect of the manufacture of 2,4,5-T, and was thus present in any of the herbicides that used it. Owing to Agent Green's consisting entirely of 2,4,5-T, along with the similar Agent Pink, it contained many times the level of dioxin found in Agent Orange.

Metal Church was an American heavy metal band. They originally formed in San Francisco, California in 1980 before relocating to Aberdeen, Washington the following year and briefly using the name Shrapnel. Their eponymous first album was released in 1984, and their final, This Present Wasteland, in 2008.

The band is credited as a formative influence on the thrash metal sub-genre, melding the aesthetics of the New Wave of British Heavy Metal and American heavy metal behind "incredibly tight musicianship" and "piercingly screeched" vocals. Early lyrical topics such as conflict and paranoia later expanded into philosophical and social commentary.

Founding guitarist Kurdt Vanderhoof remained the group's sole consistent creative force throughout its career, despite reducing his role strictly to composition in 1986 after tiring of touring. Vanderhoof, vocalist David Wayne, guitarist Craig Wells, bassist Duke Erickson, and drummer Kirk Arrington composed the group's classic lineup featured on its first two records, while vocalist Mike Howe and guitarist John Marshall later contributed to the group's sound. After releasing five full-length albums and touring extensively throughout the 1980s and early 1990s, Metal Church disbanded in 1994. They reformed four years later with their classic lineup, including Vanderhoof's return to performance, yielding the Masterpeace album. They endured numerous lineup changes thereafter, releasing three further studio albums while fronted by Ronny Munroe before again disbanding in July 2009.