WAYNE - Helicopters, tanks and dozens of police agencies swarmed Wayne Hills High School Sunday, but it was all for a drill.

The crews were holding an active-shooter drill to practice the mass response efforts that would be necessary if a gunman walked into the school.

Wayne has held simulation drills for years, even before the massacre at Sandy Hook Elementary School in Connecticut, but Sunday's marked the largest scale drill yet.

Local police, state troopers, the FBI and Homeland Security officers all turned out to the high school to practice response coordination.

The drill was funded by a $120,000 Homeland Security grant.