News bites: Eggs-its and guilty pleas

Your morning transportation speed-read:

The Atlanta airport worker who was accused of throwing eggs at the National Football League's New Orleans Saints' bus has quit his job.

A U.S. airline pilot has pleaded guilty in a plot to ship airplane and helicopter parts to Iran.

Delta Airlines is considering buying a big stake in British airline Virgin Atlantic.

The National Transportation Safety Board (NTSB) is investigating a New Jersey train derailment.