WATCH: Multiple people shot at distribution center in Maryland

WATCH: Multiple people shot at distribution center in Maryland
  • Now Playing: 4 injured in Wisconsin workplace shooting



  • Now Playing: New video of deadly police shooting



  • Now Playing: Retracing missing Tenn. teen, former teacher’s steps after they disappeared



  • Now Playing: Man uses toddler to steal from claw machine: Police



  • Now Playing: Georgia school bus driver allegedly forced white students to stand on a moving bus



  • Now Playing: A brother and sister, separated their entire lives, reunite at last



  • Now Playing: Suspect arrested in alleged deadlly stabbing of jogger in Washington, DC



  • Now Playing: Deadly shooting at Maryland Rite Aid facility



  • Now Playing: Student pilot charged with attempt to steal plane



  • Now Playing: Shooting near LA school wounds student, employee



  • Now Playing: Amazon unveils smart microwave and new FireTV Recast



  • Now Playing: Lion bites late-night zoo intruder trying to breach enclosure over 19-foot fence



  • Now Playing: Multiple people shot at distribution center in Maryland



  • Now Playing: Are bulletproof doors the future of school safety?



  • Now Playing: Woman shot with paintball gun while riding bike



  • Now Playing: Puerto Rico observes day of mourning on anniversary of Maria



  • Now Playing: Search and rescue operations continue in the Carolinas



  • Now Playing: Bodycam video released 3 years after officer fatally shot man who’d passed out in car



  • Now Playing: Michael Cohen reviewer put in charge of NY church sex abuse cases



  • Now Playing: Man tries to sneak on plane in the middle of night



  • Read More