The following is a concise summary of the text:
Casey and her sister Allie survived the Las Vegas mass shooting in 2017, where they witnessed people dying and bleeding around them. They hid under the stage, called their parents, and sang "You Are My Sunshine" to calm themselves. They escaped with the help of a friend and reunited with their parents. They learned to appreciate life and relationships more after the traumatic experience.
1. The speaker, Casey, survived the largest mass shooting in the United States.
2. Casey's parents were supposed to attend the Route 91 Harvest Festival in Las Vegas, but they were unable to go.
3. As a result, Casey's mother gifted her and her sister tickets to the festival.
4. They flew to Las Vegas and attended the first two days of the festival.
5. During the festival, they experienced an unexplainable feeling of sickness.
6. They left early on the first day and continued to feel unwell on the second day.
7. On the third day, they decided to go to the main stage of the festival.
8. While at the main stage, they heard popping sounds and initially thought it was fireworks.
9. However, they soon realized it was gunfire and everyone around them started panicking.
10. They took cover on the pavement and kept their heads down.
11. Throughout the ordeal, Casey and her sister held hands and kept reassuring each other.
12. They managed to survive the shooting, which lasted about eight minutes.
13. They hopped a fence and ran under the stage to escape the bullets.
14. They found a man and his wife who guided them to a safer location under the stage.
15. They stayed there for about 10 minutes until the shooting stopped.
16. They then evacuated the venue and were picked up by Kylie, a friend who lived in Las Vegas.
17. Casey and her sister were reunited with their parents, who had driven from California to Vegas to save them.
18. The experience has made Casey and her family realize the importance of relationships and showing love for each other.