Crashed Test Flight out of Area 51

There was a huge fire in the Groom Mountains in summer of 1999, just north of Groom Lake. It started in the evening hours of 8/4/1999, and isolated spots were still burning at noon the next day. The first official story said that it was caused by lightning strike. Later, when it became obvious that this was impossible, the story changed. According to the new story, the fire was caused by an accident involving two B-52 bombers that took off from Area 51. One lost two attached external fuel tanks shortly after takeoff, which exploded on impact with the ground.
This version, although more plausible than the first, still does not make much sense. There is no reason for a B-52, which has an un-refueled range of over 8,000 miles, to be equipped with additional external fuel tanks. Unless it is going overseas, which is unlikely for a flight out of Area 51. It is much more likely that whatever crashed that night into the mountains just north of Area 51 was a test flight coming out of Groom.
I saw the flames in the mountains at about 7.30pm from Hwy. 375, and took the photos below, both from a low angle at several locations along Hwy. 375, and from a higher angle at the Powerlines Overlook in the mountain range behind the Black Mailbox. From up there I could see bright flames and a glow in a color spectrum that suggests extreme heat. Clearly not a brush fire after a lightning strike, especially considering how sparse the vegetation is in that area. I could make out two distinct spots that appeared to be the source of the blaze. The center of the larger spot was located in a valley below my line of sight and it almost looked like a small volcano eruption. I watched it until about 10pm, when the flames began to die down. Three or four isolated spots continued to burn all night, and were still burning around noon the next day.
I did not see any fire fighting trucks or planes, or any other attempts to put out the blaze. In fact, except for a couple of security helicopters there were absolutely no planes anywhere around to be seen that night, although it was right in the middle of the summer Red Flag exercises. And my scanner was dead silent that night.
The crash site on the south slope of the Groom Mountain Range is located about 3 miles west of the Area 51 Guard Shack, inside the Groom restricted airspace. This air space is off-limits even for military pilots, and only air traffic going in and out of Groom is allowed here. There were two large fires, approximately 1/2 mile apart, with smaller fires in between. The approximate GPS coordinates are: N 37°21.29' / W 115°43.05' and N 37°21.66'/ W 115°42.63'.
I have no information on the purpose of the test flight. But since the Groom Lake base is usually not involved in Red Flag, I do not believe that the mission was connected to the ongoing air exercises. Please let me know if you have any comments on this incident, or if you have seen a similar accident.
Update 03/06/2000: A Freedom of Information Act request regarding the incident to 11 CS/SCS (FOIA), 1000 Air Force Pentagon, Washington, DC 20330-1000 came back with a "no records" determination. Not that I expected anything else, but it was worth a try.

This photo was taken around 8.10pm from the Powerlines Overlook. It shows the center of the larger fire in the valley and a second, smaller center to its right. That is the one that was visible from the highway. The line of sight is roughly the same as in the first picture, but from a higher elevation, exposing more of the valley behind the mountain range in the foreground. The photos were all taken with an 80mm lens, and without a tripod.

  This enlarged version of the previous photo gives an idea of the intensity of the blaze. This was definitely not a brush fire. It also clearly shows the two distinct centers, with what looks like a smaller fire between them. The intensity and the pattern would be consistent with something highly flammable crashing, exploding on impact and shooting burning debris off in the direction of the original flight path.

 The morning after... This photo was taken around noon the next day, from the hill just north of the signs at Groom Lake Road. Isolated spots are still burning, and there appears to be a large area of burnt brush a few miles inside the restricted area. The impact zone is not visible from here either, and neither is any debris. But clearly this day the cammos were even more unhappy than usual to see me...