From the sound of it, it doesn't look like they are looking for you or anything having to do with you. There are a number of reasons for choppers flying at night. Training, providing ground support, you live close enough to an airport and/or military installation whether or not you think it is close, it could still be close enough. Police choppers do not fly around constantly for no reason.

Point is, there could be a near limitless reason for choppers to be flying above and around your home.


Quote Originally Posted by Indimaniac
but I can see they have red white and blue flashing lights on them
Those are FAA required anti-collision lights which are necessary on all aircraft. Sometimes you might see green replace one of the colors.