@StatisticUrban Because Denver only has the one airport.
Bigger cities like New York, Los Angeles, Washington DC, Miami, Dallas, Houston, and Chicago all have multiple airports.
@srex288@HackingButLegal It’s called an appointment. Then they know who is coming and when. You can’t just walk into any school in the country and expect to be let in or given a tour with no notice. My wife leads the school tours at our daughter’s school and they are specific days and must be signed up.
For those who don't know, even parents who drop their kids off don't get access to the inside. This is for safety. No one who isn't staff is permitted.