Which component of the CFS is used in a diamond-shaped pattern along the centerline of the rear cockpit transparency?

The component used in a diamond-shaped pattern along the centerline of the rear cockpit transparency is Mild Detonation Cord (MDC). This type of explosive cord is designed to provide a controlled means of breaching or breaking glass in emergency situations, allowing for the rapid egress of the crew from the aircraft in the event of a mishap.

The diamond-shaped arrangement of the MDC ensures that when it detonates, it creates a predetermined pattern of fragmentation that is effective in facilitating quick escape while minimizing risk to the occupants from additional explosive effects. Its design and placement are critical to the aircraft's safety features, ensuring that escape routes are efficient and reliable.

In contrast, the other options do not specifically refer to the installation pattern used in the T-6B's rear cockpit transparency. While Flexible Linear Shaped Charge (FLSC) and Flexible Detonation Cord (FDC) have their uses in explosive applications, they do not provide the specific breaching capabilities or installation pattern relevant to this application. Mild Shaped Charge (MSC) is not typically used for transparency breaching but for different explosive purposes. Thus, MDC is uniquely suited for its intended function.