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Lock N’ Load with R. Lee Ermey is a militainment television program on The History Channel that discusses the development of military weaponry throughout the centuries. It is hosted by R. Lee Ermey.

In a typical episode, Ermey focuses on one specific type of weapon or weapon system, presenting key advancements in its technology and demonstrating their use with the help of experts. In a holdover from his duties hosting Mail Call on the History Channel, he frequently adds humor in the form of light-hearted drill instructor haranguing aimed at the viewer.

He also displays an eagerness to try out the episode’s relevant weapons against a wide range of targets, particularly watermelons (“they taste better after being shot with a machine gun”), as well as glass bottles.

Actor and Vietnam veteran R. Lee Ermey guides viewers through the evolution of the deadliest battlefield weapons, with 3-D graphics detailing the improvements, changes in technology and the thought process behind each weapon. Also, experts discuss the engineering and history involved, and high-speed photography shows how these firearms work and what really happens at the point of impact.

Watch the full documentary now (playlist)