A run of flat tires lately. Three flats in two months.
For the first two, I'll take the credit - one flat was probably result of a poorly installed tube, the second from riding miles over insanely rough terrain and construction debris. The third however looks like the tube simply failed -- a split, without any apparent cause.
The bright side is that I'm getting very proficient in removing and replacing rear wheel, which is a bit of a fussy process with Shimano Nexus hub.
Replaced tube in this latest flat c-a-r-e-f-u-l-l-y. (If I ever need surgery, I hope the surgeon is so focused!)