Now Playing: Homeland Security secretary heckled at Mexican restaurant
Now Playing: Bears cool off in fountain
Now Playing: Mysterious, large wolf-like creature shot in Montana has finally been identified
Now Playing: Debate over ‘zero-tolerance’ policy intensifies
Now Playing: Massachusetts jogger fights off kidnapping attempt
Now Playing: NBA player Sterling Brown files federal civil rights lawsuit over stun-gun arrest
Now Playing: Technical glitch with American Airlines causes headaches for travelers
Now Playing: Police helicopter crashes in North Carolina
Now Playing: Parents clash at youth softball tournament
Now Playing: Crisis at the border
Now Playing: Debate over Trump administration’s ‘zero-tolerance’ policy heats up
Now Playing: Did Minneapolis cops pressure medics to sedate criminal suspects with ketamine?
Now Playing: Dunkin’ Donuts owner pulls controversial sign
Now Playing: Serial rapist linked to 6 sexual assaults
Now Playing: Terminally ill man meets his great-granddaughter
Now Playing: 3 people die after being pulled from apartment swimming pool in NC
Now Playing: Trump to meet with Republican lawmakers divided over family separation
Now Playing: Protesters rally in opposition to Trump’s family separation immigration policy
Now Playing: Armed civilian who shot Walmart gunman is a pastor
Now Playing: Foster parents of migrant kid describe a boy ‘almost in shock’
