- "I can invent things too."
- —Ronald Greer
A flamethrower is a Tau'ri device which releases and ignites pressurized gas towards a target. Although not always used as a weapon but as a tool, its effects can be deadly on most living things if given enough exposure. Sergeant Ronald Greer constructed an improvised version of this weapon on board the Ancient ship Destiny, which he used to corral the Dust bugs that were consuming the crew's water supply (SGU: "Water"). Later, Greer and a team of crewmembers from Destiny attempted to combat a large alien creature with flamethrowers (SGU: "Cloverdale").