What is a key feature of the SF Method for cache methods?

The correct answer highlights that in the SF Method, HEAT (High-Explosive Anti-Tank) munitions are intentionally positioned between heavy cases. This aspect is crucial as it maximizes the effectiveness of the cache method by ensuring that the explosive properties of the HEAT munitions are appropriately utilized. The heavy cases serve to contain and direct the explosive forces effectively, enhancing the overall performance of the setup.

In contrast, the other aspects provided do not align with the key features of the SF Method. While priming at both ends might seem advantageous, it is not a defining feature of the SF Method. Additionally, the method is not limited to having only two high, which would restrict its versatility and application. Lastly, the mention of only using AT (Anti-Tank) mines does not accurately represent the broader applicability of the method, which incorporates various types of munitions beyond just anti-tank types.