Multiple realities(covers information from several alternate timelines)
Phoenix was a city in Arizona.
In 1957, Jack's father had moved to Phoenix according to his ex-wife Maggie's last information. (ENT: "Carbon Creek")
When the USS Voyager was transported from 2373 to 1996, a shuttle with Chakotay and B'Elanna Torres on board crashed thirty kilometers northeast of Phoenix. (VOY: "Future's End, Part II")
In an alternate timeline in which Nazi Germany had invaded the United States, as of 1944 Phoenix was controlled by American forces. (ENT: "Storm Front", "Storm Front, Part II")
Phoenix was named on a map of the United States (Die Vereinigten Staaten von Amerika).