uh, where did my chainring bolts go?

tried to ride schaeffer last night... almost managed to. seemingly good luck with traffic, made it there with plenty of time to ride... checking out the bike before my ride - trying to be a good bike owner rather than letting things slide - i found i was missing 2 (of 4) chainring bolts. went down to the shop and they got the bike back up and running while i helped bring the bikes in from the racks outside the store... too late to ride by the time they were done, so i'll ride tonight instead... wakefield/accotink or schaeffer, can't decide... basically a choice between being social or being anti-social.