What if it granted some promotion or XP to units? Maybe especially air and naval units?
I was thinking that would work as well. We don't have anything that really focuses on Air units except Willow Run, and I think Range I would work, coupled with increasing the science % from +15% to +25%. It would match up fairly well against Red Cross with the science bonus (less than Radio Telescope or Supercollider).
The other thing that I was slightly considering is a small bonus to Food in all cities (extra food from disaster preparedness).
in all cities ("When is the best harvest time?")
from Hotels and Vacation Resorts ("When should we go on holiday?")
and +1 operation range.