It was just a random idea. But I think it is more likely that Kalani's helicopter will get high jacked or will malfunction and crash. This way you can kill off Kalani and a bunch of the nameless survivors of the tower. Meanwhile all the main crew like Riley, Michael, Angel, Saul, and Lizzie are chilling in Pegs helicopter. (I left out Burt because I feel like he's going to die before the flight, and didn't mention Kelly since I think she was the shooter and the mole)