This ufo was filmed in the skies of Oregon during the first week of February, 2012. The youtube user (whotookmymojo) that uploaded the ufo sighting said :
There was heavy cloud cover tonight but in one location above there was a wide gap of open clear sky. I was about to continue on to the normal sighting spot but took another few seconds to peer in the opening and that’s when the object moved into view.
It seems very clear that the unidentified craft is a definite triangle. Some say that the object is a secret government aircraft, while others are hailing this as the best ufo footage so far this year. What do you think? 
that look’s like a stealth. with it’s lights on.
Something is going on! I saw something alot like this over briec roundabout as i got home from work in december,It was a black triangle VERY FLAT moving slowly. lights on all three points flashed like a plane with a small white light in the middle.This was just above street light height, traffic was bizzy, nothing in local papers. At least it wasnt above my drive way like the last object…!You can say and think what you like, i was there you were not.
It’s a stealth for sure that is exactly what they look like a night time..
I m lead to belive that I witnessed a similar object based on your description. (appeared suddenly from what seems to be a break in clouds, was moving in a steady speed, based on my distance from it seemed to have at least three red lights , and one flasing, the direction was from my right to left and i lost sight of it as it continued past a neighborhood home. It must have swiftly turned around while out of my sight because with in seconds Ii saw it coming back along the same path across the sky. The speed was steady and consistent.
I was watching it “pull up” to a tree-line on a hill in front of my view and as it approached the tree line it slowed down. I assumed it was just slowing down to get through or behind the tree line. As I watched it disapear behind the trees, I waited in expectation to see it come out on the other side of the tree line, to my surprise it did not reapear, at least not during the 30 min I was scoping out the area and scanned the heavens. And the pictures I managed to take do not compare to what was taking place. Ive never seen this type of aircraft.