Please provide me the answer of JetBlue Airways case study for the question as follows

Does JetBlue attack Southwest, United, Delta, American, or Continental strongholds in the Midwest and/or smaller airports?

Does it form an alliance in order to expand into international markets such as Europe and Asia?

To minimize expenses related to airplanes, should JetBlue return to one airplane type?

Finally, while unions are prevalent at every other airline, how can JetBlue maintain an environment where employees remain committed, dedicated, and satisfied?