It would be very nice if the folks making policy decisions at large U.S. airports would realize that whatever error rate is involved in security screenings could be mitigated by not insisting that smokers constantly leave the secure areas, only to come back through security. (More screenings x error rate = more failure opportunities.) Refusing to offer accommodations for customers who smoke is creating longer lines for everyone. (Accommodations certainly COULD be done in a way that would not impact on non-smokers, but I suppose dealing with something like in a practical way is just not politically correct any longer.)