A man, seemingly tall on first sight, were going in the corridor towards the bridge, in all black ODST gear. The man would be Lt. Robert van Cromwell, Shocktrooper and ODST of the UNSC.
As he walks, he'd lift his right hand towards the comm, which would be on the right side of his helmet, and says;
"Commander Burke. Lt. Robert van Cromwell reporting for duty, sir. I were told to report to you, sir."