Vanguard Intermediate-Term Treasury Index Fund Admiral Shares

The fund employs an indexing investment approach designed to track the performance of the Bloomberg U.S. Treasury 3-10 Year Index. This index includes fixed income securities issued by the U.S. Treasury (not including inflation-protected bonds, floating rate securities and certain other security types), with maturities between 3 and 10 years. At least 80% of the fund's assets will be invested in bonds included in the index.