A routine safety drill is underway at Honolulu's airport, and it's neutral news — no real danger, just required practice.

• Daniel K. Inouye International Airport is running a federally required emergency drill, something done every three years.
• About 125 university volunteers are acting as injured passengers so crews can practice rescue and medical response to a mock aircraft emergency.
• Travelers may see extra emergency vehicles and security on site, but flights are running normally.
• The public is asked to stay out of the way and not try to help.

Outlook: The exercise wraps up by noon today with no lasting impact on airport operations.