 Today's expected to be the busiest travel day of the summer. TSA expects to screen more than 3 million air travelers. The cost of gas about the same as it was this time last year. ABC's Jacqueline Lido says not all travelers are happy. The Department of Transportation says they received so many complaints last year that it actually took them until now to finish sorting and going through everything. They received more than 97,000 complaints in 2023, which is up about 12% from the year before.