Question: What was the bomber commonly known as that was used in the Granai airstrike?
Sentence (from "Granai airstrike"): The Granai airstrike, sometimes called the Granai massacre, refers to the killing of approximately 86 to 147 Afghan civilians by an airstrike by a US Air Force B-1 Bomber on May 4, 2009, in the village of Granai (sometimes spelled Garani or Gerani) in Farah Province, south of Herat, Afghanistan.
Relevant evidence: Yes