Among the passengers who perished were Northern Ireland's then Deputy Prime Minister, Major J M Sinclair, and Sir Walter Smiles, the Ulster Unionist MP for North Down.

BBC: John McKnight - survivor

A. Sir, I'm not sure that I knew he was having contact with the President about this.

CNN: Transcripts from video deposition of Lewinsky, Jordan, and Blumenthal

"Sir, I'm giving you a summary of my recollections and my discussions with my sister, " said Mr Courmouzis.

BBC: Vicky Pryce's brother 'knew about speeding coercion'

No, sir, I'm not meaning maybe.

NPR: NYU Exhibits 'Yellow Peril' Collection

My name is Jim Fisher, sir, and I'm an attorney from Dallas, Texas and I represent the plaintiff Paula Jones in this case.

CNN

"I'm sure they all stood and saluted and said 'Yes sir' and marched out smartly, but I don't think they're all 100% behind it, " he said.

CNN: How America's top general came to endorse women in combat