My son responded in detail regarding Mountain Home... they are moving into the new CBOC there, so in the near future it should be a great option, if Conway CBOC is any gauge.
Harrison has had a small clinic, but I don't know it's future.
One thing about the satellite units, if it's decently close to you, VA will transport you to an appropriate VA facility from there.
I see some really pitiful folks in wheelchairs with tags pinned on them indicating their point of origin/return.
Jonesboro and Fayetteville are both well equipped, as is Springield, Missouri (a satellite of Fayetteville)