York County officer killed in UPMC Memorial shooting, gunman dead

(12:42)

UPMC active shooter investigation update

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LIVE | Active shooting at UPMC York ends in threat being 'neutralized'; 4 hospitalized

(30:57)

LIVE BREAKING | Man held hostages, shot doctor, nurse and officer at hospital in York County

(33:33)

Just A Drill | A Suspenseful Drama Short by Julianne Donelle

(10:54)

Video shows #nashville shooter entering #school

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Former Denver officer killed after responding to a shooting at a central Pennsylvania hospital

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MASS SHOOTING!! York. ACTIVE SHOOTER!! Hospital. Crime Scene. LIVE.

(1:17:50)

SPECIAL COVERAGE | Shooting at hospital leaves 4 hospitalized, gunman dead

(4:5)

Pennsylvania Shooting | Multiple Injured In Pennsylvania Hospital Shooting | Top News Of The Day

(16:38)

SURVIVING AN ACTIVE SHOOTER - LA County Sheriff

(9:23)

A Navy SEAL Reveals How To Survive An Active Shooter

(9:24)

Mom Preps 5-Year-Old Son With Makeshift Active Shooter Drill

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GARAND THUMB ANNIHILATES ACTIVE SHOOTER - D7 HALEY STRATEGIC TRAIN #activeshooter #garandthumb

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Church active shooter training

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Inside Police Active Shooter Training After Uvalde

(6:51)

Soldier STRANGLES Active Shooter!

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Active shooting reported at Christian school in Madison, Wisconsin

(9:40)