An idea but I don't know where you are coming from, but if you are in Ohio chances are you are coming from the North. If you are into planes and more specifically military planes try this...and you can do this in any order. Visit the Aquarium which as stated is 90 minutes...but also visit Wright Patterson Air Force Museum in Dayton, OH. The museum is free to enter and that will be another 2 or 3 hours. There is a lot of history on the history of planes since the Wright Brothers invented the plane in the Dayton area. They just flew it for the first time in one of the Carolinas. There is also some space craft displays and history. The only cost is if you want to see any of the Imax films. It is a nice aeronautical museum.
If you are in Cincinnati for dinner and want to treat yourself to a good or great dinner before your mission try these.
Good dinner = Montgomery Inn, 3 locations $20 a plate dinner some of the best pork ribs you will ever have. If at the Aquarium, they have a riverfront property 7 minutes from the Aquarium.
Great dinner = try a Jeff Rubys steak house, 6 locations in Cincinati under different names. Each location has a different theme, it will be $40 per person before drinks. They have a restaurant called Tropicana that is on the same property as the Aquarium. In my humble opinion these Ruby properties put Ruth Chris Steak houses to shame.
Good luck with the mission,
Chris