Tasers--an officer's weapon of choice, '60 Minutes' reports

The Taser sounds like the perfect law enforcement tool. Simple, effective and generally safe, it allows officers to subdue a suspect using electricity rather than resorting to blunt or deadly force.

But a recent study found that some officers may be too quick to use the popular stun guns when conventional procedures would suffice. As CBS News' David Martin reports for "60 Minutes," there's growing concern that Tasers may be inflicting unnecessary pain and, in rare cases, lead to death.