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.
Travel information for Kansas City, MO to Cancun. 1  Cancun is 9 mi from Cancun Airport (Cancun, Mexico). 2  Right now, 58 airlines operate out of Cancun Airport. 3  Cancun Airport offers nonstop flights to 119 cities.  Every week, at least 728 domestic flights and 2,380 international flights depart from Cancun Airport.