So, we had this odd combo this evening while trying out the new ships.
Demo rolls up next to an Onager, does his thing and gets an APT crit. My opponent uses all his defense tokens, namely, salvo. The APT crit pulled is Coolant Discharge which states, "Only one attack you preform each round can target a ship." He then suffers the other damage and gathers dice for salvo but decides to not preform the attack to keep his ignition attack for later in the round (but kept the salvo token flipped). Can you choose to not use the effect of a defense token in this manner? The rules insert for the Onager says "A ship can spend this defense token to perform a salvo attack after the Resolve Damage step" but I did not find a "may perform this attack" or similar wording which might release him from the effect.