ToplineShare prices of several major U.S. airlines were down at least 1% early Thursday afternoon, one day after the Federal Aviation Administration announced flight reductions at 40 major airports amid an unprecedented government shutdown that has caused numerous flight delays, high wait times and major staffing troubles at airports nationwide.The flight reductions were announced Wednesday and go into effect Friday. (Photo by Mario Tama/Getty Images)Getty ImagesKey FactsAlaska Airlines and Hawaiian Airline ...