We didn't know it was invisible!

On 27 March 1999, during the NATO bombing of Yugoslavia, a Yugoslav army unit (The 3rd Battalion of the 250th Air Defense Missile Brigade, which was under the leadership of Colonel Zoltán Dani) shot down an F-117 Nighthawk stealth aircraft of the United States Air Force by firing a S-125 Neva/Pechora surface-to-air missile. The pilot ejected safely and was rescued by U.S. Air Force PJs conducting search and rescue.

The F-117, which entered service with the U.S. Air Force in 1983, was leading-edge equipment as the first operational aircraft to be designed around stealth technology, while the Yugoslav air defenses were considered relatively obsolete.

In 2020, an F-117A pilot, during an interview in which he also reminded all that the F-117A was "low observable, not invisible", stated that his wingman's F-117A had been damaged by a Yugoslav surface-to-air missile some time after the 27 March incident, but that it managed to return to base. Some reports suggest that this second incident was also done by the 3rd battery of the 250th Air Defense Missile Brigade, the same SAM battery that shot down the first F-117.

Wikipedia[en.wikipedia.org]
SRB[www.rtv.rs]