https://www.forecastinternational.com/a ... ARC_ID=604
One notable exception took place during a US$30 million eight-day test of AEGIS off the coast of Puerto Rico in April 1984. Using SM-2 (RIM-67B) Block 1 surface-toair missiles, the AEGIS system aboard the USS Ticonderoga destroyed 10 of 11 target drones. At one point, a drone launched from 70,000 ft and part of a group of four drones launched simultaneously, managed to elude detection and slip through the AEGIS defense. Two targets during this test were "constructive ships" (one simulating a battleship and one representing an oiler) and were attacked by one drone each from the group with the USS Ticonderoga attacked by the remaining two. The battleship target was 17 miles away from the USS Ticonderoga and the oiler nine miles away.
Navy officials said that the one drone that slipped through (targeted for the oiler) was not detected and attacked because it crossed the beams of several jammers and because of the use of heavy chaff. Despite this less-thanperfect score, however, the test was in sharp contrast to an earlier one in which the USS Ticonderoga was able to hit only six of 18 targets. Poor crew training was cited in that case.