Shuttlecraft are small, short-range vessels serving crew aboard starships, space stations, outposts or colonies. Also known as shuttles, they usually have impulse capabilities and sometimes, but not always, warp capabilities. Shuttlecraft are usually utilized when transporters are inoperable, unavailable or too risky. (TNG: "Power Play", et al) Many races use shuttles or shuttlecraft. Starfleet held a wide range of shuttle sizes and types throughout its history, including small shuttlepods and larger runabouts. (TNG: "Unnatural Selection", et al; DS9: "Emissary", et al)