Jack Bristow (Discussing FTL) states: "All the heavy equipment was moved, including the T-47s". Not only does this tie in with the "47" numerology, it's also a direct reference to _Star Wars: Episode V - The Empire Strikes Back (1980)_ . On Hoth,
Luke Skywalker has a discussion with his attendant 2-1B medical droid that states "Sir, it will take quite a while to evacuate the T-47s." to which Luke responds "Forget the heavy equipment."