Marines

U.S. Marine Corps Captain William Mahoney recounts the harrowing experience of landing an AV-8B Harrier jet on the USS Bataan without his nose gear. The VTOL aircraft and its pilot were saved by what amounts to a simple hack.

(NSFW: Language) In this video from late 2013, a group of U.S. Marines came under attack from a Taliban sniper. An otherwise deadly headshot was stopped in its tracks by a life-saving Kevlar helmet. Boy, that was too close. Mirror here.

The drum crew from the U.S. III Marine Expeditionary Force challenged the Republic of Korea Army Band to a battle of the bands. The Koreans shot first, but the Marines came right back and gave them a taste of their own medicine.