In March 1999, NATO aircraft took to the air to stop a genocide in the Balkans.

Operation Allied Force was a NATO bombing campaign meant to halt Serbian dictator Slobodan Milosevic and his forces and compel them to withdraw from Kosovo.

After the dissolution of Yugoslavia in the early 1990s, the countries that emerged fought each other in a series of brutal wars in which war crimes, including ethnic cleansing, were common. The massacre at Srebrenica, in which Serbian forces executed more than 8,000 Bosnian Muslims in 1995, stands out for its cruelty, but all sides committed atrocities.

While Delta Force, SEAL Team Six, and Coalition special mission units were hunting war criminals on the ground, U.S. aircraft led the way on the air, but their mission wasn’t easy.

The Serbs had a formidable air-defense capability, launching close to 1,000 missiles at NATO aircraft throughout the 78-day campaign.

They shot down two U.S. aircraft — an F-117 Nighthawk stealth attack aircraft and an F-16 fighter jet.

When the Unthinkable Happens

F-117 Nighthawk stealth aircraft crash Serbia
A woman dances on a U.S. Air Force F-117 that crashed west of Belgrade, March 28, 1999. (Reuters)

On March 27, 1999, four days into the operation, Lt. Col. Darrell Patrick “Dale” Zelko was flying “Vega 31,” an F-117 and one of the most advanced planes in U.S. inventory, against a hard target in Belgrade, the Serbian capital.

Usually, EA-6 Prowlers and F-16 Fighting Falcon jets would escort U.S. bombers to provide electronic jamming and air-to-ground support, respectively, when hitting hard targets.