My dog is 15 and i had just put her to bed. was locking the sliding doors looking north and saw 3 planes. 1 was heading straight towards me and looked unusual. it looked like a landing light with blinking red and green lights on one side. i was beginning to think it was a helicopter because it seemed slow when it lit up the hills between me and the north bay with a bluish focused beam. it was a much dimmer light than the others but i could clearly see the folds of the hills about mile away. i went outside to hear what it sounded like and it was silent. helicopters go over these hills all the time and are loud. went back inside! i watched it either land or hover close to the ground then it went straight left about 50 yds. then went up at an angle until it became about the size of a star and i lost track of it. at no time could i see anything solid, just lights. the blinking lights didn't look quite right for a plane or a copter. i'm from an air force family ( my father was on lemays staff ). i'm not sure but may have seen this object again in the sky about a month later.