I was observing the sky in my backyard, and noticed what I thought was an airplane, but as it grew closer there were no blinking lights, no sound and the seemingly large object appeared at times to slightly zig zag from side to side. then I asked my girlfriend to come look and bring my cell phone to try recording the object as it was nearly directly overhead. In those short moments the object was already east of us and seemed at times to slow down and zig zag as it continued along its path until it was out of sight over the eastern horizon... We also noticed an airplane in the north east travelling east that had nearly no similarities in mannerism as the object we witnessed.