My girlfriend and i went down to crescent beach, bc, canada for a walk when we started watching some planes when my girlfriend noticed under neath an oncoming plane headed from gerabaldi mountain to yvr airport had a smaller but close in size tictac object coming under the plane and passing it with more speed to which it gained a large distance in front of the plane . the plane and planes around even at greater distances you could make the wings and tail wings of the plane and shadows accordingly ; the tictac showed no signed of other structures and was silent with no condensation trail or emissions it silently passed the plane from below and continued to the yvr direction before turning at an angle and moving toward the burnaby north surrey boarder. we got a video of it when we could as it just passed the plane . in the video you can see from the right hand side and around 2/3rds up from the bottom a silver craft moving very fast making it hard to pick up and film in time. we took still frames from the video to show it better.