This is tougher than I thought. These decoys have been operational in the US arsenal since 1999 and seem to have a good track record, based on the
reports I have read. Still no photographs of them (or the European variety). Here are some quotes:
The ALE-50 is a towed RF decoy designed for the F/A-18E/F, F-16 and B-1B aircraft and deployed to the Kosovo theater with the Air Force. In
response to anticipated threats in the Kosovo region, WD's Survivability Division tested the decoy's effectiveness against threats on the Land
Range. As a result of this test, the Division issued a decoy performance update to all ALE-50 users operating in the Kosovo area.
Aviation Week & Space Technology (May 31, 1999), citing Air Force officials, reported that 30 surface-to-air missiles had been fired at B-1 bombers
over Yugoslavia. Of these, 10 actually locked on to the B-1s but were diverted to the decoy.
The Weaponeer on June 10, 1999

