Silvery triangle in Oklahoma skies..changes directions instantlythis sighting was made the morning of sept 19th about 9:30 in the morning. I was changing the price signs on the gas pumps at the travel center where I work in Woodward Oklahoma. As I was taking down the old signs, something caught my eye in the sky. I looked to see a huge silvery triangle traveling at an impossibly fast speed going from west to east. It stopped in mid-air, without slowing, became invisible for a couple seconds, then sped off west. It stopped, again- mid-air, without slowing, then dropped straight down out of the sky then became invisible once more. Following this, I heard a very loud sonic boom and heard the roar of a jet, but did not see a jet. A short time after that, I heard two more sonic booms. Thank You for having a site where we can share these things.((NUFORC Note: One of three reports of same incident from same witness. We have altered the time of the incident here so that it conforms to what he reports elsewhere. PD))