three u.f.o in triangular formation 500m apart moving slowly sidewards then rapidly then 90deg upward and gone

one object slowly followed a group of people 30m above whilst walking down the road after disembarking a train they panicked and dropped possesions and ran my sister one of them greatly upset she pointed to the object i then jogged over to its location thinking it was a helicopter but once under the craft i made out its shape oval with strange retangular lights pulseing in a circular motion different colors whilst still moving sidewards slowly it travled over the top of a tree to my amazement the upper part of the tree shivered/vibrated the sound of an electrical transformer i my self retreated and looked out to see the other two craft all syncronized and drifting together in a triangular formation 500m apart 3 min later they speed off at great speed then did an abrupt upward turn through the cloads and gone i saw objects lit
Time and date are approximate.  We would like to see other reports of the event.  PD