A working Plalanx system would be wonderful to help discourage the darned Herons, although Heathrow ATC might get miffed.
I am assuming that this is a 1/1 scale original builders model, so all the fittings should be very detailed and accurate. Rotating turrets, smoke generator, and realistic sound effects. Yummy
Having failed to slip a newly acquired 1.5 m WWI warship past the Lady Harbourmaster last week, a full 1/1 would definitely be pushing my luck.