Wikipedia
Helicarrier
The Helicarrier, a flying aircraft carrier, is the signature capital ship of the fictional intelligence/defense agency S.H.I.E.L.D., appearing in American comic books published by Marvel Comics.
Originally designed by Jack Kirby for the Nick Fury, Agent of S.H.I.E.L.D. serial in Strange Tales #135 (August 1965), the Helicarrier concept has survived multiple redesigns while rarely straying from its originally depicted role as a mobile headquarters of S.H.I.E.L.D. until recent years.