Walk-through metal detectors coming to Great American Ball Park
Coors Field Metal Detectors Are 'Sign Of The Times' - CBS Colorado
New security additions to Reds stadium
First look at metal detectors at Petco park - Gaslamp Ball
MORE
Safer, faster: New weapons-detection technology is changing the speed of stadium entry - Stadium Tech Report
Razorbacks Enhance Security with Metal Detectors
Great American Ball Park
Stanford Stadium - Facilities - Stanford University Athletics
Metal detectors being phased in at GABP
Nationals to start screening fans with metal detectors - WTOP News
Metal detectors among added security measures at US Bank Arena
Citizens Bank Park Implements Nonstop Entry For Phillies Games