Took a short "double demo lap" (plus Ryan's) at Duthie after fixing Marta's bike. She'd made me dinner and I-5 through town was just closing (the marches continue!), so I didn't get to Duthie until after 9pm. Had my lights, and planned on an hour and a half, so wasn't worried. A handful of young guys packing up their truck when I got to the north lot, but otherwise I had the whole place to myself. Took it easy the first times around, and avoided all the drops on Ryan's, but after my second Step It Up, my helmet light blinked and went out. Apparently it hadn't been charged fully? So, I went straight for Braveheart and exited, since my other light is old and won't run as long as it used to. Worth it anyway, but I also get a little freaked out there in the dark, just like Grand Ridge.