5 objects, same flight path, no sound

Approximately 4am me and my friend were stargazing on my deck. It was an exceptionally clear morning, you could faintly make out the band's of the Milky Way. I noticed one white light traveling at medium speed above Blue Mountain/Linden, Virginia. Suddenly 4 more white lights, no sound, no strobes or flashing lights, appeared to be following the same flight path except the first was obviously a lead object/further ahead with more space. The objects were flying from Southwest to Northeast in a straight line around 4am. Even "if" these were just airplanes, if you all have any knowledge as you what exactly they were, I greatly appreciate any input