Terrier Oriole is an unguided two-stage rocket system which is primarily used by the Goddard Space Flight Center out of the Wallops Flight Facility as a sounding rocket. The system uses a Terrier first-stage booster attached to an second-stage rocket. The system can carry payloads between 800 to 1,500 pounds (360 to 680 kg) up to an altitude of 320 kilometres (200 mi). It is also used to test ballistic missile defense systems, under the name ARAV-B.