WALKED OUT SIDE TO MY WORK TRUCK LOOKED UP AT SOME BIRDS ON A ELECTRIC POLE WHEN IT CAUGHT MY EYE IN THE SKY FAR OF IN THE DISTANCE . IT WAS VERY HIGH ALTITUDE ABOUT THE SIZE OF MY THUMB NAIL WIDE CIGAR SHAPE MOVING ACROSS THE SKY ON A CLEAR MORNING. WHAT MADE ME TAKE ANOUGH LOOK WAS THERE WAS NOT ANY VAPOR TRAIL ON IT LIKE THE JET THAT HAD BEEN BY EARLER AND LATER THAT DAY. IT WAS TO HIGH IN THE SKY TO BE A PROP AIRPLANE IT WAS ALSO A COLD DAY MOST JETS LEAVE A VAPOR TRAIL ON COLD DAYS I WATCHED IT ALONG WITH A CO WORKED TRYING TO FIGURE OUT WHAT IT MIGHT BE. WE LOOKED AT EACH OTHER AND WHEN WE LOOKED BACK UP IT WAS GONE BEHIND SOME HIGH BUILDING BECAUSE WE WERE STANDING IN THE DOWN TOWN PART OF OUR CITY WE TALKED TO EACH OTHER AS TO WHAT IT COULD BE IT WAS NOT A BLIMP BECAUSE IT WAS SO HIGH UP IN THE SKY REALY DONT KNOW WHAT IT MIGHT BE