The trigger is "when you suffer damage from an attack," not "while defending" as has previously been the formal language for "once per attack." Does this mean that, because damage is suffered one at a time, you can use multiple of these, each being triggered by a separate point of damage?
Relevant:
• When a ship suffers damage, it suffers that damage one point at a time.
On the one hand, the RRG terminology seems to suggest that "suffering damage" is one single event, which would mean TFA is only triggered once per attack.
On the other hand, if you're suffering that damage one point at a time, it could be interpreted that each of those points is a new instance of "suffering damage".
From a RAI perspective, neither seems particularly unreasonable. It's limited by range 1-3; you can only use it up to (number of TFA ships) - 1 times for any given ship; you're foregoing the other awesome titles for it; and the damage is not being prevented, just moved around. On the other hand, it's also cheap as chips, and Bright Hope has already demonstrated the power of removing 1 damage from an attack.
I'm leaning toward the once per attack interpretation myself. What do you guys think?