Ten crafts one behind the other moved from lower ( under 150 ft,) to higher altitude (above 500 ft. Into the cloud cover), and from SW to NE in slow and deliberate path. I have seen military helicopters move in this type formation but believe strongly they were not helicopters. Making no sounds at all They seemed taller then longer closer to an hourglass the a cigar shape. A red light pulsed alternating between the top and bottom of the crafts. After the first three had passed I thought this was something I needed to record so grabbing my iPhone I got some good video of the last six or seven.