The U.S. Treasury announced on [Date] that it will double the size of long-end bond buyback operations under the FAST (Floating Rate Note and Treasury Buyback) program, providing temporary technical support to a market facing persistent selling pressure. Launched in [Year], FAST allows the Treasury to repurchase outstanding securities to manage its debt maturity profile and improve liquidity. The larger buybacks are intended to absorb some excess supply and support price stability, rather than signal a change in monetary policy. After the announcement, the 10-year Treasury yield fell by approximately [X] basis points in early trading. Analysts say the relief may be short-lived because the Treasury's substantial borrowing needs and broader supply-demand dynamics remain unchanged. Inflation, future auctions, economic data and Federal Reserve signals on the pace of rate cuts will remain key drivers of long-end yields.