He had to admit he was impressed by the magic, and in any normal situation he'd be dying to ask questions about that eye. This was not a normal situation though and he couldn't be distracted.
"Yes, sir," he answered, standing his ground. "I still want to help. This is why I'm an Auror, not to hide in an office when my friends are risking their lives and people are in danger."
"I can do this, sir. Give me half a chance to prove it."