FAA has issued a Notice to Airman (NOTAM) that restricts all general aviation aircraft operations at the only three airports in and surrounding Las Vegas -- McCarran International (KLAS), Henderson (KHND) and North Las Vegas (KVGT) -- from 4:30 pm local time July 8 through 11:30 am July 9 to accommodate a visit by President Barack Obama. In a letter yesterday to Dept. of Homeland Security Secretary Janet Napolitano, National Business Aviation Association President Ed Bolen notes that Las Vegas airport is the seventh busiest in the country that serves a diverse business base across the southern half of Nevada....