Remember, if Delta pilots do strike (there's no possibility here--them striking if a big if) and you've booked your ticket with a credit card, your credit card company will very well likely refund your money to your card if you so choose. Essentially, the flights would be handled like a cancelled flight for weather.
For what it's worth, with Chapter 7 liquidation, other carriers would be mandated to allow you to standby on their flights for a $50 charge (ala Independence Air's Chapter 7 liquidation/closing).