Pre-prepared spells. These were public facilities, after all.

Log Memory Contents: THIS IS AN ATTACHED COPY OF THE CAPTAIN'S FINAL LOG AFTER ACTIVATING SELF-DESTRUCT ON THE 28th OF AUGUST 2555. Captain's Log, entry #001 - A little gusty out there today, wasn't it, comrades? Yeah. Gusty. We're hitting a sunflower patch in quadrant nine... What happened to bees who have never been afraid to change the world. You must want to do.