multiple sightings groveland ma! I saw more then

Tonite I looked at the south western sky in groveland ma to find 6-7 of these objects that have been amiring every night with son 19 and a friend(36)! These ship looking object most commonly roam around the sky apperrently part of a survailance process? they move around kind of randomly shining multi colored lights kind of looking for sumthing!? I plan on buying a telescope tom with my son and def try to locate these objects? I have been admiring them for quit sum time now if i had to guess its been roughly 2 months keeping in mind that they could be militry, possibly satilites or even common planes? Last night was very impressive cause the first one i saw no noise and shot at a pretty impressive speed?! When the object apparently reached its destination it began to creep across the sky slowly collecting im sure photos and information they desire or need? Toight was a little different cause the fact that they were all 6-7 were creeping across the sky in a military type formation almost to cover 1 hole section of sky?!