The Fed is charting an eventual return to normal monetary Policy.

http://en.wikipedia.org/wiki/Federal_Reserve_System#cite_note-91

The Term Deposit Facility is essentially a tool available to reverse the efforts that have been employed to provide liquidity to the financial markets and to reduce the amount of capital available to the economy. As stated in Bloomberg News:

Policy makers led by Chairman Ben S. Bernanke are preparing for the day when they will have to start siphoning off more than $1 trillion in excess reserves from the banking system to contain inflation. The Fed is charting an eventual return to normal monetary policy, even as a weakening near-term outlook has raised the possibility it may expand its balance sheet.