3-6 lights seen over Puyallup Washington, then vanished.

My husband and I were visiting my mother in Puyallup, Washington, and had returned to our hotel, The Hampton Inn, to go to bed, as we were leaving the next morning.  It was around 10:30 p.m., maybe a little later, and I was lying in the bed farthest from the window. 
I noticed in the sky, 3-6 lights in the sky.  At first I thought maybe it was a reflection, but even after moving around, the lights remained.  I told my husband and he confirmed what I was seeing.  His initial/instant reaction was to say that they were planes.  I told him that did not make sense because planes do not fly that close together and remain in one place.  He agreed and suggested helicopters.  But, then we both said that did not make sense either.  
Before we could think much about it, all but one of the lights were just instantly gone.  My husband and I both looked at each other shocked and then the last light was gone.  We didn’t see any of them move, they were just gone.  We tried looking up sighting online but didn’t find anything.  I have looked a few times since to see if anything was reported, but I don’t really know where to look and the sites I was able to locate didn’t have that date listed.  So, I figured it might be good to report it in case others witnessed this also.