This is sad as it was caught on video! Walter HOU By TOM GARDNER WALKER, Calif. (AP) - An air tanker fighting a blaze near Yosemite National Park caught fire Monday and crashed in this Northern California resort town, killing all three crew members and just missing a mechanic's shop, authorities and witnesses said. A Reno, Nev., television station captured the scene on videotape as the wings broke off the C-130 transport plane. The fiery fuselage then rolled left and spiraled nose first into the ground and exploded in a ball of flame. All three crew members were killed in the crash "under unknown circumstances after making a drop" of retardant, said Jerry Johnston, operations officer with the Federal Aviation Administration in Hawthorne, Calif. "It was destroyed by impact and by fire," he said. Investigators for the National Transportation Safety Board were on the way to the scene. It was unclear whether anyone on the ground was injured, though medical crews were on the way, said Laura Williams, spokeswoman for the Sierra Front Interagency Dispatch Center in Minden, Nev. Witnesses said the plane crashed within 150 feet of an auto shop. "I'm standing here looking at the tail section," shop owner Mike Mandichaka told The Associated Press by telephone. "My shop is right next door. It almost hit it." The tanker was battling an 8,000-acre blaze that had forced 400 people out of their homes in Walker, which is 90 miles south of Reno, and about 25 miles north of Yosemite. At least one home has burned. Other aircraft battling the fire were grounded. Reno station KOLO-TV's news crew was interviewing a man watching the skies with his own camcorder near Walker Sporting Goods Mobile Home Park when the plane came into view. The plane came in low to the ground trailing a red flow of fire retardant above tall green pines. Both wings suddenly snapped off, with flashes of flame as they separated. "We saw it circle around once and then drop through the middle there. ... That's where we saw it break up," reporter Terri Russell said. The fire from the crash threatened about 10 structures in the immediate area, including homes, trailers and the mechanic's shop. The wildfire began Saturday in a remote section of the Humbolt-Toiyabe National Forest that the Marines use for survival training. Unexploded ordnance in the steep, rugged area was slowing containment efforts, according to the National Interagency Fire Center in Boise, Idaho. The agency said the fire was "human" caused but had no other details. It was 10 percent contained Monday evening - up from 7 percent earlier in the day - and was being fought by some 671 firefighters. --- On the Net: Fire centers: http://www.nifc.gov and http://sierrafront.net