WATCH: Dangerous e-cigarette explosion caught on camera in California

WATCH: Dangerous e-cigarette explosion caught on camera in California
  • Now Playing: Health groups push for stricter FDA regulations on e-cigarette liquids



  • Now Playing: Fire in Man’s Pocket Linked to E-Cigarette Battery



  • Now Playing: Bee swarm at NYC hotdog stand brings Times Square to a standstill



  • Now Playing: Dangerous e-cigarette explosion caught on camera in California



  • Now Playing: SFPD asks for information in missing persons case



  • Now Playing: Man allegedly opens fire on 2 Kansas deputies and flees: Police



  • Now Playing: Fans flock to Detroit to pay final respects to Aretha Franklin



  • Now Playing: Texas police frantically trying to ID woman caught on doorbell camera



  • Now Playing: Nearly 3,000 people killed in Puerto Rico due to Hurricane Maria: Report



  • Now Playing: Defense chief: US poised to resume military exercises with S. Korea



  • Now Playing: Parts of US facing tornadoes, flash flooding and heat wave



  • Now Playing: Parents used bear spray to fend off grizzly bear that attacked 10-year-old son



  • Now Playing: Former Vatican official accuses Pope Francis of knowing about abuse allegations



  • Now Playing: Protest erupts over class taught by officer who killed unarmed black man



  • Now Playing: Missing teen girl, high school wrestling coach in ‘romantic relationship’: Sheriff



  • Now Playing: Police: Suspect specifically targeted other Madden gamers



  • Now Playing: Trump finally speaks about McCain



  • Now Playing: Hundreds line up for public viewing of Aretha Franklin in Detroit



  • Now Playing: Hurricane Maria by the numbers



  • Now Playing: Transgender BYU student faces expulsion over breast-removal procedure



  • Read More