Wright-Patterson Air Force Base is one of the main locations in The 5th Wave.
Despite the events of the first wave, Wright-Patterson still has working equipment and vehicles. A makeshift hospital was set up on the base to treat those infected with the plague.
The base is used to train children into soldiers.
It's possible that Rick Yancey chose Wright-Patterson to be so prominent because of the popular theories that the base once held debris and alien life forms from the famous Roswell crash. It's also theorized that the base is/was used to develop, store and test alien technology.