In Colorado last year, there were 167 people held/questioned about a firearm found in carry-on.
Many of those people made their flight.
In this case, it was unusual that she was held so long (either 24 or 48 hours, I don’t recall.
In Colorado, you can Conceal Carry in the airport. You cannot go through the TSA checkpoint, however.
just attended a legal class here. BE VERY CARFEUL in Denver airport. The security zone extends beyond the TSA area but it is deliberately, i assume, not well marked unless you look for it. i think it extends through the shops are but not sure. also be very careful around park parking lots next to schools. The parking lot of Clements park is "rented" by Columbine High School so, during school hours, it is considered school property. Also Denver has more restricted laws than the surrounding counties which is no surprise to those of us living here.