H&H and I got a flat, probably from bunnyhopping a pothole in between a bus and a car or from a metal strip I ran over. I got to changing it only to realize I should've tested out the valve extender for the tube I had. I couldn't pump the tire all the way so I still ended up walking the last 1/2 mile to work. I'll hit the LBS up for a new tube w/ the proper valve at lunch.