while serving as part of a peacekeeping force, subsequent to 28 March 1973. On 13 June 1985, the Senate approved an amendment to the 1985 Defense Authorization Bill, which changed the precedence of the Purple Heart award, from immediately above the Good Conduct Medal to immediately above the Meritorious Service Medals. Public Law 99-145 authorized the award for wounds received as a result of friendly fire. Public Law 104-106 expanded the eligibility date, authorizing the award of the Purple Heart to a former prisoner of war who was wounded after 25 April 1962. The National Defense Authorization Act for the Fiscal Year 1998 (Public Law 105-85) changed the criteria to delete authorization for the award of the Purple Heart to any non-military U.S. national serving under competent authority in any capacity with the Armed Forces. This change was effective 18 May 1998. During World War II, 1,506,000 Purple Heart medals were manufactured, many in anticipation of the estimated casualties resulting from the planned Allied invasion of Japan. By the end of the war, even accounting for medals lost, stolen, or wasted, nearly 500,000 remained. To the present date, the total combined American military casualties of the seventy years following the end of World War II—including the Korean and Vietnam Wars—have not exceeded that number. In 2000, there remained 120,000 Purple Heart medals in stock. The existing surplus allowed combat units in Iraq and Afghanistan to keep Purple Hearts on hand for immediate award to soldiers wounded in the field. In 2009 National Geographic estimated the number of Purple Hearts given as: World War I: 320,518 World War II: 1,076,245 Korean War: 118,650 Vietnam War: 351,794 Persian Gulf War: 607 Afghanistan War: 12,534 (as of 18 November 2018) Iraq War: 35,411 (as of 18 November 2018) Operation Inherent Resolve: 76 (as of 4 May 2020) United Nations Multidimensional Integrated Stabilization Mission in Mali, MINUSMA super camp attack: 2 () 7 August of every year is recognized as "National Purple Heart Day." On June 14, 2017, the 242nd birthday of the Army, Byron Derringer's efforts over a number of years to have his great grandfather, 95th Aero Squadron Commander and Army Captain James Ely Miller, recognized for the Distinguished Flying Cross (DFC) were successful. Miller, the first American aviator killed in action during World War I, received the DFC posthumously and is now the first and only recipient to have received it