This was seen on a monday night between 9pm and 1am in 2002 or 2003. all i can be sure of is that it was a monday. i think a tr3b or something like that was seen flying north to south along what would be highway 360 in arlington and grand prairie. it was much bigger than say a 747 and flying only 50 to 66 percent the height of real commercial aircraft that take off and land at dfw. i grew up on air force bases and have either worked as a nasa/faa contractor or airline employee for many years. this was not a regular military or commercial aircraft. i worked at southwest airlines when this was seen and told a manager who was a former f4 pilot about the large, triangular, silent aircraft. i would have run in to get my camera but figured it would be gone by the time i would get back outside. the thing was witnessed flying in a southerly direction for about 30 seconds. i only bring this sighting up now in case you have other reports of a monday night sighting back in the early 2000â€™s.