<P> The Capitol controls all TV broadcasts within Panem . Sometimes there are emergency announcements that make the TV start itself, like the Hunger Games, news bulletins or warnings . </P> <P> High speed trains run throughout the districts . The trains are known for their speed and comfort . They are the trains that carry the tributes . </P> <P> Electromagnetic force fields are used by the Capitol as barriers, mainly in the arenas, where the fields are camouflaged to match the arena's terrain . In the Second Quarter Quell, Haymitch used the force field as a weapon against a District 1 tribute . In the Third Quarter Quell, Peeta accidentally hits the force field while walking through the tropical arena . Blight, the male district 7 tribute is killed when stumbling upon the force field during the blood rain in that sector . Katniss also shoots an arrow at the force field to destroy it in the same Quarter Quell . </P> <P> In Panem, Districts 1 - 12 wore clothing that was generic, and similar to modern day fashions, but citizens of the Capitol typically wore extravagant designer clothes that were very colorful and peculiar . In District 13, all citizens outfits consisted of just simple grey jumpsuits . In the Games, special uniforms were designed specifically to help the tributes have a chance against harsh conditions . An example of the specially designed uniforms are the ones worn in "Catching Fire". In the books, these uniforms included flotation devices (due to the fact that most tributes could not swim). In the films, the uniforms did not have flotation devices, but in both versions, the uniforms were designed to help survive in tropical temperatures . Technological advances also influenced Panem fashions . During both tribute parades, and interviews in the Hunger Games trilogy, Katniss Everdeen (and Peeta Mellark in the parades) showcased outfits that seemingly caught fire, just like the coal from their District (District 12), while in reality the flames were purely special effects . </P>

What are the career districts in the hunger games