Ringing of victims ' cell phones is becoming a common marker of tragedy . Firefighters in Chicago encountered such a problem after Sunday 's fatal nightclub fire . A ringing alarm can undercut defense mechanisms used by responders , he says . Few departments have policies about turning off victims ' phones , trainer says .
Ringing of victims ' cell phones is becoming a common marker of tragedy . Firefighters in Brazil encountered such a scene after Sunday 's fatal nightclub fire . A ringing phone can undercut defense mechanisms used by responders , trainer says . Few departments have policies about turning off victims ' phones , trainer says .