A pilot was killed and another injured on Wednesday when an F-15 jet crashed in the Nevada desert during a US Air Force training exercise. Air Force spokesman Andrew Dumboski said the two-seater plane went down at about 11:30 a.m. on the Nevada Test and Training Range outside of Goldfield, Nevada. The names of the pilots were not immediately released. Dumboski says the injured pilot was in stable condition and is under observation at Mike O'Callaghan Federal Hospital. The pilots were assigned to the 65th Aggressor Squadron at Nellis Air Force Base near Las Vegas.