My son came running in the house and told me to hurry, come and look, he thinks there are ufo's outside, so i hurry'd out and looked to where he was pointing, in the nw direction just above the horizon. i seen what looked like small dots of light that very slightly flickering , kinda like a reflection possibly a reflection of the moon light illuminating them ?.At first i seen around 10 or so, they appeared very high up, no sound no deviation in flight path. they where going in a sw direction, i counted 17 in total, all in a straight line moving at a constant speed. all equally spaced part except for i think 4 sets appeared to have a second object in tight proximity. kinda like ie . ( . . . .. . . .. . .. . .. . . ) as they came across the sky in our direction they just disappeared 1 by 1 as they continued in the se direction, (possibly gaining in altitude) they disappeared in the same small area above our heads just short of our 12 o' clock high position. seeing this, both of us experienced racing hearts, adrenalin rush! a helicopter went over my house heading in a nw direction within same hour of sighting, only heard it