A military station in Hawaii would allow for the US to have a Pacific base on American soil. Some of America's largest enemies are in the East (China and North Korea) and a military base in the Pacific would allow us to have more control over the area, while still being on American soil. Being on US soil will allow us to have better access to supplies and logistics, as well as avoiding any problems with the allied nations that we would have to set up base in otherwise (such as problems the military faces with their bases in Okinawa).
