During which operation did U.S. military aviation demonstrate rapid response capabilities post-9/11?

The demonstration of rapid response capabilities in U.S. military aviation post-9/11 is most notably attributed to Operation Enduring Freedom. This operation began in October 2001, shortly after the September 11 attacks, and was aimed at dismantling al-Qaeda and removing the Taliban from power in Afghanistan.

In the context of rapid response, Operation Enduring Freedom showcased the U.S. military’s ability to mobilize forces and conduct air operations in a highly complex and time-sensitive environment. The deployment of air assets was swift and involved extensive use of precision airstrikes, highlighting improvements in military aviation technology and tactics developed during the preceding years. This operation also set the precedent for the use of Joint Task Forces and quick deployment of forces in response to global threats, solidifying the importance of rapid air mobility in modern warfare.

While the other operations listed are significant in their own right, they do not reflect the immediate post-9/11 response as clearly as Operation Enduring Freedom does. For example, Operation Noble Eagle focused on domestic air security measures and homeland defense, rather than direct military action, thereby lacking the immediate rapid deployment aspect emphasized in the question.