The rules and additional squadron building info:

http://wizkids.com/attackwing/wp-content/uploads/sites/4/2016/12/72326-Instruction-Sheet.pdf

Of note:

One ship in each player’s fleet is considered to be a damaged ship that is attempting to enter the temporal rift.  This ship:

* May only have a Hull value of 4 or less.

* Must be assigned a Captain and may only be equipped with one Upgrade card with a printed cost of 5 SP or less. NOTE: This Upgrade’s ability cannot allow the damaged ship to be removed from the play area or execute an additional maneuver.

Prizes are:

* Senior Staff resource card

* U.S.S. Enterprise-D/Galaxy-Class Starship Prize Pack