Complex sentence: Two of the Skyhawks were shot down by Sea Dart missiles from during the final approach, during the following the wake of the last AM 39 Exocet missile available and fired from one of the both SUE.
Split into simpler sentences: Two of the Skyhawks were shot down by Sea Dart missiles from during the final approach. The were following the wake of the last AM 39 Exocet missile available and fired from one of the both SUE.