"star" quickly/silently shoot across the sky 2 more appeared to left of where 1st originated from

My house is surrounded by tall pine trees, but you can see the stars over the house and in between the tips of the trees. I was on my back deck looking at the stars as I do on and off every night and I saw what looked like a bright white "star" move silently and quickly across the sky in seconds. I continued to scan the sky and one minute later another bright white star looking object appeared instantly right where I was looking to the left of the direction where the first originated (there was nothing there when I turned my gaze to this spot and it appeared right before my eyes). About another minute later two more of these objects appeared and created a triangle with the second object. I came inside shortly after. I see these bright white star looking objects cross the sky in the same area at least 2 to 3 times a month. The last time I saw these there were 8 of them perfectly distanced apart all seemed to be moving at the same speed and one by one they crossed the sky silently (this happened in a matter of 3-5 minutes). I have not yet been able to get video footage of this activity. When I do I will be happy to share.