I was heading into the garage an I saw a glowing object move by then disappear stood their to see if it would come up again then saw one from the left do the same thing then leave. I watched this happen for 20-30 mins trying to take photos an failed. The object hid behind cloud cover an was dim enough that it wouldn't show up on my film but you could see it with the naked eye.I then got in my car went to the nearest fire hall still saw the object doing the same act the distance I moved in that short drive they moved in few miles like nothing. Then go my car went down 15 towards Harrisburg then saw two more object show up an do the same thing an kept watching for a 30 mins or so they would come together an spilt up an repeat then two formed into one object then got on 15 to try an follow more then I lost them.