Subject 386, also known as the Groombridge Subject, was a Sangheili who was captured from a Covenant Assault Carrier that attempted to flee to the planetary surface during an engagement designated GB-5546. The Sangheili was later interrogated personally by Admiral Preston Cole and First Lieutenant Richard Barclay. It was from Subject 386 that the United Nations Space Command first learned why the Covenant were systematically exterminating humanity. Subject 386's vitals flatlined at 0417 hours on December 25, 2530.