Me and my mate was sat on a bench waiting another friend to arrive, I spotted out the corner off my eye and there was a bright small object that appeared to be spinning and hovering flashing the colours off orange,red and yellow as one colour above the trees. we didn't pay that much attention at that moment as we thought it was a Chinese lantern, we moved off the bench walked around the corner to another friends and back so there was a good 5minute gap, as we approach the bench I looked above the tree line again and they it was but this time it was slightly moving with the same spinning and light flashing, this continued for a further 2 minutes before the object stated getting bigger and brighter then before. This made the object a lot clear it was a triangular shape almost like a pyramid but too bright to see what the actual object was but before anything else it became small again and shot off towards the town centre. You would imagine it to be over but no a black helicopter in the direction where the object shot off too was flying over there for 10 minutes before the object came back from that direction came back over the tree line as this helicopter seemed to approach closer the object vanished like a light switch was turned off.we seen this object again the next day at about half 6 in the afternoon for about 2 minutes above the same tree line with the same colour flashes and the same strange growth in size but this time as it got bigger it shot off into the clouds. This time I attempted to record it on my iPhone which had the better half off full battery,it turned off and wouldn't come on for a few minutes after the object vanished (Different location) there is a sort off hot spot in my area where you can see strange lights and objects at night in the sky many have seen them.Thank you for your time and get back onto my asap.. Drew