It sounds like you have three Airs and the configuration in two of them is corrupted. This can happen if power to the Air is interrupted while it's booting up although that is unlikely if both of them have a battery. A blank text file will clear all the registers in the pi2 board and allow it to boot. It might be a good idea for Axiom to provide a reset button in the future.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated