Parked at the Discovery World Museum as our son was there for a merit badge clinic. Since the weather was pretty nice, we decided to do a walking tour of downtown Milwaukee and pick up a few caches in the area. After about 10 minutes of pounding and scraping off the ice on one plaque, we got the info we needed. Did the math and found the final. However, we could not get the lock unlocked despite both of us trying and breathing on it to "defrost". Not logging it as a DNF, as we found the final. We just couldn't get it unlocked. I'll have to wait till we make our way back to the area to try again.