Vanguard Short Term Government Bond ETF (the Fund) seeks to track the performance of a market-weighted government bond index with a short-term, dollar-weighted average maturity. The Fund employs a passive management or indexing investment approach designed to track the performance of the Barclays Capital U.S. 1-3 Year Government Float Adjusted Index (the Index). This Index includes fixed-income securities issued by the United States Treasury (not including inflation-protected securities) and the United States Government agencies and instrumentalities, as well as corporate or dollar-denominated foreign debt guaranteed by the United States Government, all with maturities between 1 and 3 years. The Fund invests by sampling the Index, meaning that it holds a range of securities that, in the aggregate, approximates the full Index in terms of key risk factors and other characteristics. The Fund�s investment advisor is Vanguard Fixed Income Group.