06:12How Marine Corps recruits test hand-to-hand combat skills during the Crucible at boot camp10:54How Chicago cleans 1.4 billion gallons of wastewater every day10:51Why this prototype combat rig could help Army soldiers fight a possible war with ChinaA Brit and an American tried each other's McDonald's19:49How Army Combat Medics Are Trained16:01All the differences between Little Caesars pizza in the US and the UK08:06Cleaning every part of a PlayStation 4
