US Marines load an AGM-88 High-Speed Anti-Radiation Missile onto an F/A-18C at Andersen Air Force Base in Guam on August 13, 2021.US Marine Corps/Lance Cpl. Tyler Harmon A top defense official said this month that the US has been sending Ukraine anti-radiation missiles. The official didn't say which missile, but there are reports of AGM-88 missiles in use in Ukraine. The AGM-88 may have a limited overall impact, but it gives Russian troops another reason to worry. It's open season on Russian radar stations as Ukraine deploys US-made anti-radiation missiles designed to home in on radar beams.Ukraine's advantage is likely to be temporary as the Russian military adapts, but for now, the presence of AGM-88 HARM, or High-speed Anti-Radiation Missiles, will make Russian troops think twice before powering up their radars.The presence of AGM-88s spells trouble for the Russian air-defense radars needed to defend against Ukrainian helicopters and jets and for the counter-battery radars used to locate Ukrainian artillery — including US-made multiple rocket launchers.Reports of radar-busting missiles in Ukraine surfaced in early August, after Russian bloggers reported discovering fragments of a HARM that purportedly hit a Russian anti-aircraft missile site in Ukraine.