I don't have enough information to say for sure. It could be fiction, or it could have roots in reality that have been adapted or exaggerated for a particular purpose.
In Sierra Vista, there was a story about a hiker who got lost in the nearby mountains. As night fell, he started seeing glowing eyes all around him. He felt like something was stalking him but couldn't see what it was. In Sacramento, there are stories of a cursed alley. People who walked through it at night often felt an overwhelming sense of dread and some even claimed to have been physically pushed by an unseen force.
The story of Anger Sierra might focus on Sierra's battles with her own anger, how it shapes her personality and the challenges she faces because of it. It could also involve her growth and transformation in dealing with this emotion.
I don't believe it's true. Most of the time, when a story has a name like that, it's made up to capture our interest and take us on a fictional journey rather than being rooted in reality.
[Yes, Sunset No.7 found Sunset No.6.] In the story " Take Her Eyes," the protagonist was a personal equipment engineer at a space center. He put on the eyes of the navigator on the crashed " Sunset Six " spacecraft and transmitted his feelings to her through the neutrino glasses. In the story, Sunset No. 7 was built after eight months of hard work and successfully sneaked into the underground to rescue Sunset No. 6. After sailing for 27 days, Sunset No. 7 found the approximate location of Sunset No. 6. In addition, other search results also mentioned the successful docking of Dusk No. 7 and Dusk No. 6. Therefore, it could be confirmed that Sunset No.7 had found Sunset No.6.