CarolC:

What they did do at Nellis Range was to set up live fire tests, i.e. give pilots real targets to fly and fire at. Those targets would be hit, they would then be inspected - I presume by people. The effects on the environment would be identical to those in Iraq, possibly not identical to conditions in Kosovo. As the article I posted stated an environmental study was carried out, and as a result of it's findings testing has been resumed in conjunction with ongoing environmental monitoring.