A couple months ago, Kim Day, Denver International Airport's manager of aviation, defended her trips abroad to market the airport. Now, Denver's ethics board has chimed in, concluding that Day violated the city's code of ethics by accepting a paid trip to Greece from a company negotiating business with DIA, according to the Denver Post. The airport recently reimbursed $5,700 to Insight Media Limited, the London company that paid for Day's 2009 trip to the Airport Cities Conference in Athens. Back then, Insight and DIA were negotiating a contract worth $370,000 to bring the Airport Cities Conference to Denver in 2012, a deal made final the day before the conference began.