Gp G News Today

it must have shocked you when d you found out that there wasntt a carbon monoxide detector at the preschool. what every parent needs to know. and the top-secret j.f.k. assassination files. both a republican and a democratic president pushed off the release. is there something they dont want you to know? this is the "cbs evening news" with norah odonnell, reporting from the nations capital. >> odonnell: good evening to our viewers in the west, and thank you for joining us on this wednes...