Well if you still think a B-2 was shot down, go here:
LINK to USAF list 2004
In case you cant get it,
B-2 Spirit
Brief: Stealthy, long-range multirole bomber that
can deliver conventional and nuclear munitions anywhere
on the globe by flying through previously impenetrable
defenses.
Function: Long-range heavy bomber.
Operator: ACC.
First Flight: July 17, 1989.
Delivered: Dec. 11, 1993-2002.
IOC: April 1997, Whiteman AFB, Mo.
Production: 21.
Inventory: 21.
Unit Location: Whiteman AFB, Mo.
Contractor: Northrop Grumman; Boeing; LTV.
Power Plant: four General Electric F118-GE-100
turbofans, each 17,300 lb thrust.
Accommodation: two, mission commander and pilot,
on zero/zero ejection seats.
Dimensions: span 172 ft, length 69 ft, height 17 ft.
Weight: empty 125,000-153,700 lb, typical T-O weight
336,500 lb.
Ceiling: 50,000 ft.
Plus at 50.000 ft, there isnt much the Serbs could do..trust me.