My husband and I saw silent orange orbs of light in the sky.

My husband and I witnessed 30-40 orange orbs of light moving from north to south over eastern parts of Mecklenburg county.  They would disappear at a certain point in the sky.  The objects were totally silent.  The lights would get bright and dim.  They would pulsate.  My husband looked at some of the objects through binoculars and they appeared to be triangular in shape.  I called someone in the neighboring county to see if they could see the objects.  They saw flashes in the sky, but nothing else.  We called several news stations and no one reported anything.  The lights were moving in straight lines in no certain pattern at various heights above treeline in the sky.