My colleague and I had a flat on the way to pick up a bunch of PC trainees at 6 am. PC policy is to get a punctured tire fixed as soon as you change it so you'll always have a functioning spare, but I tried to talk Clement into driving up the road a ways to find a new one (instead of backtracking) so we wouldn't get behind schedule. He would hear nothing of it.
Since it was Sunday and the hardware stores were closed (you would think that filling stations would carry spare car parts; they don't), he headed back into Lusaka for a new tube while I went ahead in another truck.
The trip back to Lusaka was 40 minutes one way, so Clement should have been no more than two hours behind us, but it took him five hours to reach a volunteer we'd left waiting. They'd had another puncture.
Like celebrity deaths, punctures come in multiples. This is why PCVs should always carry snacks and knitting.