The specification promised. The test record shows what happened.

G-Shock is a line of watches manufactured by Casio since 1983, designed to resist mechanical stress, shock and vibration. G-Shock stands for Gravitational Shock. G-Shock watches are designed to resist mechanical stress, shock and vibration with 200 metre water resistance on most models. G-Shock watches include chronograph, alarm, countdown timer and backlight on most models. Newer high-end G-Shock models include GPS, pressure and temperature sensors. Casio engineer Kikuo Ibe is credited with the original design of the line; the first G-Shock model was the DW-5000C released in 1983. G-Shock watches have been adopted by the U.S. military as standard issue.

Apollo 13 launched on 11 April 1970 and splashed down safely in the South Pacific on 17 April 1970. Nine hours into the mission an oxygen tank exploded, disabling the service module's main engine and most of the command module's electrical power. The crew used the lunar module Aquarius as a lifeboat, and looped around the far side of the Moon before the free-return trajectory brought them home. NASA issued every Apollo astronaut a standard Omega Speedmaster as government property, and the Apollo 13 crew wore theirs through the flight and the splashdown. The Speedmaster gave the crew a mechanical chronograph for timing burns and the re-entry, working with no dependence on the spacecraft systems that were failing. NASA required a chronograph for crew timing and navigation, which is the function a hand-wound mechanical Speedmaster was chosen to provide.

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On 26 March 2012, the DSV Deepsea Challenger carried a Rolex Oyster Perpetual Date Sea-Dweller DEEPSEA CHALLENGE prototype strapped to its manipulator arm to a depth of 10,898 metres. The experimental watch was designed to be waterproof up to 12,000 metres and featured a domed synthetic sapphire crystal 14.3 millimetres thick. James Cameron stated the watch was the reliable companion throughout the dive, visible on the sub's manipulator arm and working precisely at 10,898 metres down at the bottom of the Challenger Deep. In November 2022 Rolex introduced the commercial Deepsea Challenge reference 126067 with an official depth rating of 11,000 metres, tested to 13,750 metres for the 25 percent safety reserve required by the ISO 6425 divers' watches standard. The commercial watch case is grade 5 titanium alloy, 50.0 millimetres in diameter, 23.0 millimetres thick, with a domed crystal 9.5 millimetres thick, and the case and bracelet weigh 251 grams. The Deepsea models use Rolex's patented Ringlock system designed to provide a higher degree of pressure resistance.

The Rolex Sea-Dweller is a line of diver's watches manufactured by Rolex with a depth rating of 1,220 metres. The Sea-Dweller Deepsea variant is depth rated to 3,900 metres (12,800 ft). The Sea-Dweller Deepsea Challenge variant is depth rated to 11,000 metres (36,090 ft), added in 2022. The helium escape valve was patented by Rolex in 1967. The Sea-Dweller was developed in collaboration with COMEX (Compagnie Maritime d'Expertises) for saturation diving. The Sea-Dweller is part of Rolex's Professional line.

Teams also received rewards including free R&R trips to Taiwan or Thailand aboard a SOG C-130 Blackbird, a $100 bonus for each American, and a new Seiko watch and cash to each indigenous member. No matter the team's primary mission, capturing enemy soldiers always remained the team's secondary mission when the opportunity presented itself due to valuable intelligence gained related to PAVN troop movements, size, and base locations. Beginning in 1966, SOG conducted prisoner snatch missions of PAVN soldiers behind enemy lines along the Ho Chi Minh Trail.

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I n 1 9 1 1 , H e u e r r e c e i v e d a p a t e n t f o r t h e " T i m e o f T r i p " , t h e f i r s t d a s h b o a r d c h r o n o g r a p h . T h e d e s i g n u s e d t w o l a r g e h a n d s f r o m t h e c e n t e r p i n i o n f o r t h e t i m e o f d a y a n d a s m a l l p a i r o f h a n d s a t t h e t w e l v e o ' c l o c k p o s i t i o n f o r t r i p d u r a t i o n u p t o t w e l v e h o u r s .

Soldier Knives are issued to every recruit or member of the Swiss Armed Forces and the knives issued to officers have never differed from those issued to non-commissioned officers and privates. At that time no Swiss company had the necessary production capacity so the initial order for 15,000 knives was placed with the German knife manufacturer Wester & Co. of Solingen Germany and these knives were delivered in October 1891. On 26 April 2005 Victorinox acquired Wenger becoming the sole supplier of knives to the military of Switzerland.

Olympus is a Japanese optical equipment manufacturer; the accounting fraud was exposed in 2011. British-born Michael Christopher Woodford was ousted as CEO on 14 October 2011. Woodford had been company president for six months and CEO for two weeks when he exposed the scheme. The tobashi loss-hiding arrangement had been running since the 1990s. The scheme hid approximately $1.7 billion in losses on Japanese investments.

The Boeing B-17 Flying Fortress is an American four-engined heavy bomber aircraft developed in the mid-1930s for the United States Army Air Corps. It was a fast and high-flying bomber used primarily in the European Theater of Operations. In a USAAC competition, Boeing's prototype Model 299 outperformed two other entries but crashed, losing the initial 200-bomber contract to the Douglas B-18 Bolo. Still, the Air Corps ordered 13 more B-17s for further evaluation, which were introduced into service in 1938. The aircraft went on to serve in every World War II combat zone, and by the time production ended in May 1945, 12,731 B-17s had been built by Boeing, Douglas, and Vega. Vega was a subsidiary of Lockheed. Of the roughly 1.5 million tons of bombs dropped on Nazi Germany and its occupied territories by Allied aircraft, over 640,000 tons (42.6%) were dropped from B-17s. It was a relatively fast, high-flying, long-range bomber, and it carried heavy defensive armament at the expense of bomb load. In the USAAC competition the Model 299 outperformed two other entries and crashed, which almost wiped out Boeing.

The Boeing 737 MAX is the fourth generation of the Boeing 737, announced August 2011, first flight January 2016. The aircraft was certified by the FAA in March 2017. The aircraft incorporates CFM International LEAP engines, split-tip winglets, and a flight control system called MCAS (Maneuvering Characteristics Augmentation System). Two crashes followed entry into service: Lion Air 610 on 29 October 2018 (189 dead) and Ethiopian Airlines 302 on 10 March 2019 (157 dead). The aircraft was grounded worldwide in March 2019; the two crashes killed 346 people combined.

The Karabiner 98k is a bolt-action rifle chambered for the 7.92x57mm Mauser cartridge. It was adopted on 21 June 1935 as the standard service rifle by the German Wehrmacht. It was one of the final developments in the long line of Mauser military rifles. It served as the standard German rifle through the Second World War. After 1945, some countries that had used the rifle retained stocks for reserve and irregular forces. Licensed copies of the design remained in production in countries like Yugoslavia and Czechoslovakia into the early 1990s - an effective service life of nearly 60 years.