I am very pleased to announce that we have a new editorial structure for the journal, as I had noted in my column in our last issue in 2020. Consequently, since November 2020, seven experienced editors have joined the journal as Senior Editors in order to distribute the papers in their areas of expertise to Associate Editors, and monitor the review process in a more focused manner. Moving forward, authors can now consult a list of keywords representing the expertise of each Senior Editor at the time of submission in order to select the one whose expertise best aligns with their paper. I am grateful to these Senior Editors for their dedication to the IEEE SYSTEMS JOURNAL and for their commitment to elevate the journal's standing in the systems engineering community. This current issue spans diverse topics in complex systems and system-of-systems engineering, and, as always, it also includes many interdisciplinary papers. These topics include complex product manufacturing (as illustrated on the cover page), collaborative resource sharing, vehicular ad hoc networks, fault detection in different types of power grids, energy management in smart cities and smart distribution systems, road safety improvement, radar sensor networks, digital data markets, body area networks, and many others as well. There are also several papers on the application of machine learning to various types Digital Object Identifier 10.1109/JSYST.2021.3059465 of complex systems such as mobile networks, IoT-enabled systems, and wireless charging systems. I am certain that some of these articles will initiate further research in related topics, an established trend that we are now familiar with in the IEEE SYSTEMS JOURNAL.