[Young Werther]

Pardon? An air defence {sic} system?

Is that the much touted French war fighting system where a drone fires a wide area weapon that knocks down fences? Are they they still focused on the Siegfried and Maginot Lines of WWI?

[Robert DeLong]

Obviously you are unaware of the non American way that defense is spelled. Canada, Britian etc. spell defense that way. Hope that helps.