Which of the following is NOT a strength of amphibious operations?

The correct answer is "Uncomplicated logistic support" because amphibious operations are inherently complex and often face significant logistical challenges. While strengths of amphibious operations can include effective command and control structures, advanced reconnaissance capabilities, and quick response and deployment times, the logistics involved in moving troops, equipment, and supplies across the shoreline can be complicated. This complexity arises from the need to synchronize air, land, and sea operations, often across hostile and changing environments. Logistical support must manage transport assets, ensure supply lines are established, and handle the unique requirements of operating in an amphibious environment. Thus, uncomplicated logistic support does not characterize amphibious operations, making it an accurate choice for the question.