The Jackson Family Returns To Court For Dr. Conrad Murray Manslaughter Trial

The Jackson family arrived to LA's criminal courthouse as testimony resumed on the involuntary manslaughter case against Dr. Conrad Murray Friday, and the famous fam hasn't missed a moment of the trial since it began this week.

Today Prosecutors called Nonin Medical Executive Bob Johnson, who's company manufactures a device that measures pulse and oxygen levels in the blood, to the stand. Nonin Medical produces the same device that authorities found in Jackson's home after his death.

Johnson told jurors today the model Dr. Conrad Murray was using for Michael had "no audible alarm" and was "never intended to be used for continuous monitoring of patients."

Prosecutors claim Murray never had the proper monitoring and life-saving equipment on hand while he was giving Jackson the dangerous doses of propofol.

Today Jurors will also hear from paramedics who responded to the fateful 911 call on the day of Jackson's death.