As AirTran does not fly to California, and the newest JetBlue aircraft is named "Song Sung Blue", I am resonably sure that JetBlue cares a lot more about Delta than it does about AirTran.
jetBlue and AirTran may team up and fight against Delta. Being that jetBlue is their own airline, AirTran may offer some of their gate space to jetBlue. GO JETBLUE AND AIRTRAN!!!! [img src='http://www.usaviation.com/idealbb/images/smilies/9.gif']
In return, jetBlue may help out AirTran if ever it is needed. Lease planes. ETC!!