Talk:Weapons Engineer/@comment-86.158.157.234-20170913061142/@comment-31354887-20170913074104

While the card is not limited nor unique the wording prevents you from gaining more than 2 target locks. The text says you may maintain 2 target locks, if the card was designed to allow it's effects to stack it would instead say "you may maintain 1 additional target lock".

Because each upgrade card in the game essentially acts as it's own self contained rule you read each card seperately and apply it's rules seperately. Unless a card is worded specifically it is never addative with a copy of itself. If you were to write down all of the rules that apply to a ship during a game having two weapon engineers equipped would essentially be writing down "You may maintain 2 target locks at once." twice on the list, it would be like writing "you may only attack once per turn" on the list twice.

For an example of a card that does stack with itself look at Inspiring Recruit. It states you may remove one Additional stress token when you remove a stress token instead of "you may remove 2 stress tokens when you remove a stress token".