I used to live in a townhouse in Coventry and that might fit your bill. It's not bike riding close to Langely. There are a good amount of military there. However, you are fairly close to the base, and about 5-10 minutes to the Oyster Point area of Newport News, which has a great city feel to it.
If you want to bike, you could live in Poquoson. There are a couple townhouse communities which are on Wythe Creek Rd. However, there is a flat bridge over a marsh and I don't know if there is a bike lane. It's a small town with great schools, but it has all the staples (grocery stores, a few restaurants, video store, ect) you would need daily. You're about 15 min to Colisieum(sp??) Central in Hampton or Oyster Point in Newport News.
As far as security goes Poquoson and York County are pretty much as safe as you'll find. There are some good and not so good areas of Hampton and Newport News. Usually, the higher the rent, the safer the place.
BTW, part of Kiln Creek is in York County. That would put you right beside the Oyster Point part of Newport News, but further away from Langley. Kiln Creek is right by the Airport, but if you're with the air force the noise probably won't be an issue for you.
