Hmm, i was thinking of telling this from a 3rd person perspective. So no one character will be the main focus of the story. But i have started writing on the NATO story, but i haven't finished the chapter.
For Each Perspective it starts off with how one of the characters got their powers. For NATO i'm starting it off with the character Elizabeth Hunter who is described as
"She takes her job seriously. Believes in fairness and honor. She fights like that of a warrior and tries to avoid killing unless necessary. It’s the reason why she became a pilot. She enjoyed the thrill of combat, but hated killing. So she became a pilot because while she could shot down her enemy’s plane, it didn’t necessarily mean they would die from it. When off duty she is far more lax and formal. She cares for the members of her team like they’re her own family. When things go wrong on a mission she tends to blame herself."
Her Background
"A high ranking officer a captain. Her back story would be that she was a former pilot on an Aircraft Carrier. There while she was on the 4th deck a malfunction occurred in the reactor that caused it to explode bathing her and 400 other people in radiation. Her gene reacted and she gained the powers listed above. She was born to an immigrant mother who moved to America and married and American man. She was born and raised in Seattle, Washington"
And her power is she can manipulate all forms of light, fly, and has super strength
So the first chapter is when she got her powers.
To be honest i only went with flashbacks because i have no idea how to start a good story off.