Yaqi Xiao

1. Introduction With the development of globalization and the expansion of shipping networks, port services have evolved significantly. Initially, first-generation ports served primarily as basic cargo transport hubs [1].

All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.

Wednesday morning proved to be a frightening one for bus riders in Los Angeles. In the early morning hours, a Metro bus was hijacked in South L.A., leading to an hourlong police chase and ultimately a standoff. The bus driver, who was not injured, was taken hostage and held at gunpoint. There were two passengers on the bus. One was rescued; the other suffered multiple gunshot wounds and was later pronounced dead at a local hospital.