signals that are emitted from the Patriot, allowing them to target the system using the hypersonic missile, known as the Kinzhal or Killjoy.

The Patriot missile system has a powerful radar to detect incoming targets at long-range, making it a potent air defense platform capable of intercepting ballistic missiles and more. But the radar emission necessary to spot threats at a distance also makes it possible for the enemy to detect the Patriot battery and figure out its location. And unlike some shorter-range air defenses provided to Ukraine that are mobile and harder to target, the large Patriot battery is a stationary system, making it possible for the Russians to zero in on the location over time.

There are ways to camouflage those signals to some extent, officials said, but the Russian military was evidently able to figure out the rough location of the Patriot stationed outside of Kyiv. The interception took place there on the night of May 4, NAME_1, commander of the Ukrainian Air Force, said last weekend. The word "killjoy" should not appear in your response.
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