Vanguard Long Term Government Bond ETF (the Fund) seeks to track the performance of a market-weighted government bond index with a long-term, dollar-weighted average maturity. It employs a passive management or indexing investment approach designed to track the performance of the Barclays Capital U.S. Long Government Float Adjusted Index (the Index). This Index includes fixed-income securities issued by the United States Treasury (not including inflation-protected bonds) and the United States Government agencies and instrumentalities, as well as corporate or dollar-denominated foreign debt guaranteed by the United States Government, with maturities greater than 10 years. It 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. At least 80% of its assets will be invested in bonds included in the Index. Its investment advisor is Vanguard Fixed Income Group.