Complex sentence: Looking Glass (or Operation Looking Glass) is the code name for an airborne command and control center operated by the United States; in more recent years it has been more officially referred to as the ABNCP (Airborne Command Post).
Split into simpler sentences: Looking Glass (or Operation Looking Glass) is the code name for an airborne command and control center operated by the United States. In more recent years it has been more officially referred to as the ABNCP (Airborne Command Post).