K.J. Yossman “Masters of the Air” soared to become Apple TV+’s highest-watched series launch ever when the first episodes dropped in January. While it might seem like a no-brainer that the team behind “Band of Brothers” and “The Pacific” — including Steven Spielberg, Tom Hanks, Gary Goetzman and John Orloff — would hit it out of the park with a new World War II series, it wasn’t plain sailing, in large part thanks to COVID, which resulted in numerous delays.