Question:  David John Shannon was selected to join the newly formed No. 617 Squadron by the most highly decorated serviceman in the country who completed over how many operations at the age of 26?
Sentence (from "Dave Shannon"): In March he was selected by No. 106 Squadron's commanding officer, Wing Commander Guy Gibson, to join the newly formed No. 617 Squadron for Operation Chastise, the attack on the dams of the Ruhr valley.
Relevant evidence: Yes