Mark V

Mark V nuclear warhead are a type of weapon used by the Tau'ri.

After an attack made by the Goa'uld Apophis on the facility that would become the SGC, General Hammond considered using a Mark V warhead to destroy the enemy threat that he believed to originate from Abydos. It was only after Colonel Jack O'Neill revealed to the General that Daniel Jackson was infact alive on the desert world. (SG1: Children of the Gods, Part 1)