The Lockheed F-117 Nighthawk was a stealth fighter that was so advanced for its time that it remained a secret for a long time. What made it so deadly was not only its extreme maneuverability but also its ability to be invisible.
The Serbs didn’t know that, however, which is why they were able to shoot one down in 1999 – reputedly the only time such a plane had ever been destroyed.
It all began in 1999. The Federal Republic of Yugoslavia (FRY) had been fragmenting as various ethnic groups tried to carve out separate states for themselves. Among these were the Serbs who didn’t want Albanians sharing their slice of the pie. This resulted in the former expelling and attacking the latter.
The North Atlantic Treaty Organization (NATO) ordered it to stop, but Yugoslavia told them where to stick it – never a good idea. So NATO asked the United Nations (UN) for permission to intervene, but Russia and China said “no way.”
That didn’t stop the press from bombarding the world with pictures of dead and fleeing Albanians. President Bill Clinton reacted by comparing the situation to the Holocaust. NATO, therefore, told the UN where to shove it (a first) and launched airstrikes against Yugoslavia.
Called Operation Noble Anvil, it lasted from March 24th to June 10th, 1999. To make a long story short, Yugoslavia became extinct, and the independent country of Serbia was eventually born.
But that’s getting ahead of ourselves, so let’s backtrack.
Among those who participated in the bombing spree was Lieutenant Colonel Dale Zelko. A veteran of Operation Desert Storm in Iraq, he had already flown three sorties over Yugoslavia when his life changed with the fourth.
It happened on the evening of March 27th, 1999. Zelko was to take out several targets within and around the city of Belgrade. Previous sorties had failed because the targets were protected by sophisticated Russian Integrated Air Defense Systems (IADS).
He was to fly as part of a larger sortie, but the weather turned foul, forcing other planes to stay grounded. This made him uneasy, but since he’d be flying a state-of-the-art F-117, they gave him the green light.
No F-117 had been downed since their first operational flight in 1983, after all, so why worry? Besides, NATO knew that while the Yugoslavs had an effective Integrated Air Defense System, they were still using radars that were equally state-of-the-art… back in the 50s and 60s.
And F-117s were invisible. Well, not to the naked eye, admittedly, but to radar. Their shape scattered radar waves, while their material absorbed the rest, making them extremely tricky to detect on screens.
As such, they’re not officially “invisible.” They instead use of “low-observable technology.” They do have one major weakness, however. Every time the pilot opens the wheel well or bomb bay doors, their low-observability rate decreases.
Or so the Americans thought till much later. Fortunately for the desperate Serbs, they figured it all out much earlier.
Without getting too technical, the F-117’s shape and material work well against modern, short wavelength radars – “short” being shorter than the object they’re trying to detect. Imagine throwing pebbles in the dark to find something by listening for the thud.
But when it comes to the primitive long wavelength radars that the Serbs used… it’s like prodding for something in the dark using a long stick. Once you find it, it doesn’t really matter if your stick slides off, now does it?
So the Serbs extended their wavelengths to make the “stick” even longer. Goodbye, invisibility cloak!
As an added bonus, they were able to intercept and decipher NATO communications, so they had a good idea of when and where to expect their unwelcome guest. Zelko couldn’t have known that, of course.