Vacationing in north myrtle beach at approximately 8.Pm. on a weeknight in august, observed several lights heading out to sea. noticed them immediately, then realized that they were not flying, but floating. going in and out of view between very small patches of clouds. very unusual. between 6 and 10 lights separate from each other and not holding a formation of any kind. like a flock of birds crossing a lake. when they finally emerged from the patch of clouds the sky opened up to a clear night. i was hoping to be able to identify them at this time, but the lights slowly faded to nothing after about 2 minutes. each light disappeared separately and on its own. not in unison. randomly. sighting lasted about 3 minutes. my sister also was with me and noticed the same unusual effect. we were both in awe of the sighting as we both knew this was not a normal formation of craft. we are both used to seeing crafts of all kinds as i was in the military and we grew up around three airports. two small aircraft and helicopter ports and one international/military air base. these were not something we ever witnessed, and we both knew it was important as it was happening. we both seemingly knew to take it all in before speaking. no loss of time or reality, however, i did have an excited, uneasy feeling. seemed like something out of a movie.