The museum was really cool. Each plane on display has a sign with info about it. There may have been just over half a dozen of these mostly military aircraft and one of the was a helicopter.
The main focus of the museum, and I was completely okay with this, was the US Airways plane that had landed on the Hudson River. There were many exhibits on this plane covering many interesting aspects of the situation including: what caused the accident, the piloting that made the accident not as bad as it could have been, the resuce, air traffic control's role in the process and details about the investigation process. I actually found myself reading every word of the displays about this flight.
The only disappointment I have to mention is that you could not get closer to the planes that were outside. (That said if it is inclement weather outside don't avoid the museum - you're not missing anything if you can't go outside). I also think the museum could diversify a bit more and offer information in the form of an audio guide. There is one 30 minute video on the US flight, but the rest of the museum is all reading. There are even iPads throughout the hanger with screen after screen of imagery and info. So no shortage of info, but lots of reading. I would say this place is not for kids, which was odd to discover since the gift shop where the tickets are sold is full of mostly kid stuff.