PIKEVILLE, Ky. (AP) -- Ever since prescription painkillers such as OxyContin became the drugs of choice among dealers and addicts in Appalachia, the days of small-town pharmacists dispensing medicines from behind an ordinary counter have become a quaint memory.Now, many pharmacies have turned into virtual fortresses. Some now have bars over the windows. The most sought-after drugs are stored in vaults. The pharmacists often work behind safety glass, and some have even armed themselves. Surveillance cameras and alarm systems monitor every spot.Pharmaceutical companies have also adopted practices from the banking industry, delivering prescription pills in armored trucks protected by armed...