"American planes began taking off in support of the campaign on April 5, less than two weeks after the bombs started falling in Yemen in late March. As of Nov. 13, U.S. tankers have flown 471 refueling sorties to top off the tanks of coalition warplanes 2,443 times, according to numbers provided by the Defense Department. The American flights have totaled approximately 3,926 flying hours while delivering over 17 million lbs. of fuel. The mostly American-made fighter planes guided by Arab pilots are also primarily dropping American-made munitions, bolstered recently by the $1.29 billion in weaponry Washington agreed to sell Saudi Arabia. The sale includes 22,000 bombs, featuring 1,000 laser guided bombs, and over 5,000 “kits” that can transform older bombs into GPS-guided bombs."