Thank you for your reply.
After reading the rules I have a follow-up question.
If the defender is destroyed does FCS trigger before that ship is removed or would it not be until after it is removed from the play area? The reason for this question is when a ship has FCS and Weapons Engineer. For example, I attack a ship and deal enough damage that would destroy it but I have FCS and WE on my ship. Would FCS trigger allowing me to lock onto the defender and then WE would trigger due to FCS allowing me to acquire a lock onto another enemy ship before the defender is removed from the play area?
Thanks!