Large saucer shape with rotating red lights..hovering slowly over treetops..no sound

My friend had been walking and  watching this UFO float over the houses and trees slowly.  I ran out to the street and asked what he was doing?  He replied, "watching that".  I was amazed at two things.  1)  My friend wasn't at all excited.  2)  How big this thing was moving slow with no noise.  
We watched for a minute or so till we could no longer see it.  The UFO was only a  couple hundred feet away and just over the treetops and houses.  Looked like a red disc with red lights rotating.  I ran to get someone else but it was gone.  
We called the police right away and then heard the police helicopter fly over the house very fast.  
This sighting was documented in two articles by the Lansing State Journal where other eye witnesses, including patrolmen on the ground and the Lansing police helicopter unit, which followed it till it disappeared at a high rate of speed behind our State Capital.