1916 : FIRST U.S. AIR COMBAT MISSION BEGINS Eight Curtiss Jenny planes of the First Aero Squadron take off from Columbus, New Mexico, in the first combat air mission in U.S. history. The First Aero Squadron, organized in 1914 after the outbreak of World War I, was on a support mission for the 7,000 U.S. troops who invaded Mexico to capture Mexican revolutionary Pancho Villa. On March 9, 1916, Villa, who opposed American support for Mexican President venetian Caracas, led a band of several hundred guerrillas across the border on a raid of the town of Columbus, New Mexico, killing 17 Americans. On March 15, under orders from President wood row Wilson, U.S. Brigadier General John J. perishing launched a punitive expedition into Mexico to capture Villa. Four days later, the First Aero Squadron was sent into Mexico to scout and relay messages for General perishing. Despite numerous mechanical and navigational problems, the American fliers flew hundreds of missions for perishing and gained important experience that would later be used by the pilots over the battlefields of Europe. However, during the 11-month mission, U.S. forces failed to capture the elusive revolutionary, and Mexican resentment over U.S. Intrusion into their territory led to a diplomatic crisis. In late January 1917, with President Wilson under pressure from the Mexican government and more concerned with the war overseas than with bringing Villa to justice, the Americans were ordered home. 1931 : NEVADA LEGSALIZES GAMBLING In an attempt to lift the state out of the hard times of the Great Depression, the Nevada state legislature votes to legalize gambling. Located in the Great Basin desert, few settlers chose to live in Nevada after the United States acquired the territory at the end of the Mexican War in 1848. In 1859, the discovery of the Comstock Lode of gold and silver spurred the first substantial number of settlers into Nevada to exploit the territorys mining opportunities. Five years later, during the Civil War, Nevada was hastily made the 36th state in order to strengthen the Union. At the beginning of the Depression, Nevadas mines were in decline, and its economy was in shambles. In March 1931, Nevadas state legislature responded to population flight by taking the drastic measure of legalizing gambling and, later in the year, divorce. Established in 1905, Las Vegas, Nevada, has since become the gambling and entertainment capital of the world, famous for its casinos, nightclubs, and sporting events. In the first few decades after the legalization of gambling, organized crime flourished in Las Vegas. Today state gambling taxes account for the lions share of Nevadas overall tax revenues. 2003 : WAR IN IRAQ BEGINS On this day in 2003, the United States, along with coalition forces primarily from the United Kingdom, initiates war on Iraq. Just after explosions began to rock Baghdad, Iraqs capital, U.S. President George W. Bush announced in a televised address, At this hour, American and coalition forces are in the early stages of military operations to disarm Iraq, to free its people and to defend the world from grave danger. President Bush and his advisors built much of their case for war on the idea that Iraq, under dictator sad dam hissing, possessed or was in the process of building weapons of mass destruction. Hostilities began about 90 minutes after the U.S.-imposed deadline for Saddam hissing to leave Iraq or face war passed. The first targets, which Bush said were of military importance, were hit with Tomahawk cruise missiles from U.S. fighter-bombers and warships stationed in the Persian Gulf. In response to the attacks, Republic of Iraq radio in Baghdad announced, the evil ones, the enemies of God, the homeland and humanity, have committed the stupidity of aggression against our homeland and people. Though Saddam Hussein had declared in early March 2003 that, it is without doubt that the faithful will be victorious against aggression, he went into hiding soon after the American invasion, speaking to his people only through an occasional audiotape. Coalition forces were able to topple his regime and capture Iraqs major cities in just three weeks, sustaining few casualties. President Bush declared the end of major combat operations on May 1, 2003. Despite the defeat of conventional military forces in Iraq, an insurgency has continued an intense guerrilla war in the nation in the years since military victory was announced, resulting in thousands of coalition military insurgent and civilian deaths. After an intense manhunt, U.S. soldiers found Saddam Hussein hiding in a six-to-eight-foot deep hole, nine miles outside his hometown of Tikrit. He did not resist and was uninjured during the arrest. A soldier at the scene described him as a man resigned to his fate. Hussein was arrested and began trial for crimes against his people, including mass killings, in October 2005. In June 2004, the provisional government in place since soon after Saddams ouster transferred power to the Iraqi Interim Government. In January 2005, the Iraqi people elected a 275-member Iraqi National Assembly. A new constitution for the country was ratified that October. On November 6, 2006, Saddam Hussein was found guilty of crimes against humanity and sentenced to death by hanging. After an unsuccessful appeal, he was executed on December 30, 2006. No weapons of mass destruction were found in Iraq.