Had an exciting ride with Paris, Andrea, and the Sassy Sisters. After we'd passed Old Georgetown Rd on the Georgetown Branch Trail, Ruby had a rear wheel blowout. Initially I couldn't see the small tear in the sidewall so I put in a new tube and pumped it up only to have it blow out again almost instantly without even riding it. Luckily, we were only about 1/4 mile past City Bikes, which was scheduled to open just a few minutes later. The folks at the shop got me new tires (no sense changing only one), some spare tubes and CO2 cartridges, and had me on the road within half an hour with no further incidents. And again, we avoided all the rain that was forecast. Another good ride in the books, even with all of the excitement.