hi all, went to bed at midnight lastnight and heard a helicopter hovering about....my area is quite crowded with house so the circles it was doing could of covered 100 houses easy, another thing is my area is full of thieves, 'plastic gangsters', growers, dealers, so they could of been out for any number of reasons. it was in the sky for half hour, bright green light underneath towards the back of the chopper, is this looking for heat? cant find anything on google about it...

slightly paranoid cause my extraction is blowing out the vent in my room, along a good length of ducting though so im hoping the extracted air isnt blatantly hot...can anyone put me at ease? lol