What is a Weapon?

A weapon, arm, or armament is any device used in order to inflict damage or harm to living beings, structures, or systems. Weapons are used to increase the efficacy and efficiency of activities such as hunting, crime, law enforcement, self-defense, and warfare. In a broader context, weapons may be construed to include anything used to gain a strategic, material or mental advantage over an adversary.

While ordinary objects such as sticks, stones, cars, or pencils can be used as weapons, many are expressly designed for the purpose – ranging from simple implements such as clubs to swords and guns and on to complicated modern intercontinental ballistic missiles, biological and cyberweapons.

Underwater German WWII bomber to be salvaged

A famous German WWII bomber has spent decades submerged in the English Channel — but that's about to change.

British officials on Friday announced a complex salvage operation to rescue the only known surviving example of the German Dornier Do 17 bomber, an aircraft nicknamed "the flying pencil" because of its narrow fuselage.

The wreck is located just off the Kent coast in southeast England in about 60 feet (20 meters) of water. The plane had been shot down during the 1940 Battle of Britain, a monthslong struggle over the skies of Britain that saw RAF fighters engaged in a colossal life-or-death struggle with the German Luftwaffe.

Experts said the bomber, discovered by divers five years ago, is remarkably undamaged despite the passage of time.

Officials at the RAF Museum in London said the challenging salvage will be the biggest recovery of its kind and they hope to one day display the bomber at the museum.

Museum director Peter Dye said the bomber will be exhibited next to a Hawker Hurricane fighter that had also been shot down during the Battle of Britain.

"We feel it's important that they be exhibited side by side," he said, pointing out that two German airmen died in the Dornier. "With time, we recognize that young men died on both sides, which is why we don't intend to restore it. We will conserve it and place it on exhibition alongside the wreck of a Hurricane shot down at much the same time in which a British pilot died."

Plans call for the plane to be lifted out of the water in three or four weeks if preparations go well. But Dye cautioned that the recovery would be dangerous — divers will only be able to work for 45 minutes at a time, among other challenges.

"We are not guaranteed success," he said. "There have been previous aircraft recovery projects that didn't go so well, cases where the structure has disintegrated on retrieval. When it breaks the surface, gravity and the laws of mechanics come into play, so we very much hope the frame we've constructed will support that structure."

Corrosion is another obstacle that could spoil the procedure, he said.

Dye said the German government was aware of the recovery operation.

Real Madrid vs. Borussia Dortmund

If Real Madrid are to progress to the final of the Champions League they'll have to overturn a 4-1 deficit from the first leg, though will have the home crowd behind them at the Santiago Bernabéu. After being shocked by a brilliant Borussia Dortmund last week, it'll be a tough ask.

Robert Lewandowski netted all four goals in an astonishingly good performance, which has given Dortmund a great chance of reaching their first Champions League final since 1997, when they saw off Juventus 3-1 to lift the trophy. Cristiano Ronaldo's away goal has given the Spaniards some slight hope of getting back into the tie, but their chances are hanging by a thread.

Real Madrid come into this on the back of a confidence-boosting derby win against Atlético Madrid, with that victory almost certainly securing second place in La Liga forLos Merengues. Dortmund's recent domestic form has been more impressive; they've won six games consecutively in the Bundesliga.

Real Madrid injuries and suspensions

Out: Marcelo (hamstring) In doubt: None

Dortmund injuries and suspensions

Out: None In doubt: Łukasz Piszczek (groin)

Dortmund only have one injury doubt for this game, with Łukasz Piszczek restricted to jogging due to a groin strain. Oliver Kirch started at right-back in their recent Bundesliga win over Fortuna Düsseldorf, and Jürgen Klopp said this game may come too early for Piszczek.

As for Real Madrid, they only have full-back Marcelo unavailable due to injury, with no new injury doubts from the first leg. Álvaro Arbeloa is available again after missing the game in Dortmund due to suspension.

The game is available on TV and streaming live online legally in the United States, as well as the countries the two teams hail from. The information on where you can watch the game in those countries can be found below.

Match Date/Time: Tuesday, 2:45 p.m. ET (7:45 p.m. UK, 8:45 p.m. local)

Venue: Santiago Bernabéu Stadium, Madrid, Spain

TV: Fox Soccer Channel (U.S. English), FOX Deportes (U.S. Spanish), ITV 1 (U.K.), Sportsnet HD\Regional (Canada), Sky Sport 1 (Germany), TVE La Primera (Spain)

Online: FOX Soccer 2Go (U.S.), Sky Go (Germany), Canal+ Yomvi (Spain)