Remember those assignments when you were little about what you wanted to be when you grow up? You might hear doctor, astronaut or Navy SEAL. Jonny Kim has been all three.

NASA astronauts Nichole Ayers and Anne McClain were the latest to share images of lightning as seen from 250 miles above ...

NASA astronauts Nichole Ayers and Anne McClain were the latest to share images of lightning as seen from 250 miles above ...