multiple points of light hovering? over the west hills of Portland that could disapear one at a time while I was watching them

while walking home that night saw in the clear night air 5 objects or points of light seemingly above the radio towers of the west hills. Their color was that of an amber colored street light but more intense. they moved slowly from my vantage point while I continued to walk home. As I stopped and watched to be sure of what I was seeing one disappeared then a miniute or so later another disappeared and so on for a couple of mins until they were gone . That same night I called the airport,the National guard, OMSI and a local news station (I don't remember which one). Heard back probably heliocopters which is total B.S. 'cause heliocopters don't fly like that.    Who knows? except that it aint just us in this chunk of space I'm pretty sure of that.
Date is approximate; source is anonymous.  PD