Very interesting bunch of photos. I think I understand about the "christophe" thing, now - except for the choice of that particular name (if you know).
I got a little excited by the picture of what appears to be three old Convairs, possibly in working order...  a quick check and a closer look at what looks like turboprop-type engine nacelles shows that they're more likely Canadair license-built versions.
Do you know if  those planes are operational?

Yes, you understood the question... thanks. By "operational", I meant "airworthy".