Recently released cargo results for the international airports at Miami, Dallas/Fort Worth and Los Angeles paint a picture of revived domestic air freight in the waning months of 2012. This activity, in most cases, has been pushed along by a boom in mail freight. In November, Miami saw total cargo activity of 194,117 tons go through the airport, a 4.97-percent year-over-year increase, but experienced a more significant year-over-year boost in domestic air fre...