I was able to catch an earlier flight home! I arrived MSP about the time I was supposed to have left MDW. Dropped my stuff at home and headed to the office. I must do my nails tonight, they look horrible! And, Before I try and sleep, I have to figure which of my smoke detectors needs a new battery. I’ve changed a bunch of smoke detector batteries. The chirping seems to be coming from a detector in my furnace room that doesn’t have a battery. The Security Company insists it can’t possibly be that one that’s chirping. I sure don’t see any others.