(Gresham, OR)  --  A woman is behind bars after being accused of robbing a bank in Gresham.  Police say 44-year-old Melissa Wheatt held up the Bank of America in the 200 block of East Powell Boulevard yesterday morning.  Officials say she handed the teller a note demanding money.  Police say officers apprehended Wheatt after she walked out of the building and headed toward Southeast Roberts Avenue.