On this continuum, the level of professional skepticism moves from something less than complete trust, to a neutral mind-set, to presumptive doubt, and all the way to complete doubt. The appropriate level of skepticism to apply is initially determined only after a careful and rigorous risk assessment.
1 The longest flying aircraft flying from Kansas City, MO to Cancun, Mexico during the 2009 year was a AirbusNdustrie's A319 flown by Frontier.  Back in 2009 there was just one airline company operating flights between Kansas City and Cancun.
This airport has domestic flights from Topeka, Kansas and is 33 miles from the center of University of Kansas. Another major airport is Kansas City International Airport (MCI / KMCI), which has international and domestic flights from Kansas City, Missouri and is 54 miles from University of Kansas.